Endometriosis is a long-term inflammatory condition in which tissue resembling the uterine lining develops outside the uterus, commonly affecting the ovaries, pelvic peritoneum, bowel or bladder. Its symptoms extend well beyond painful periods and often include chronic pelvic pain, fatigue, bowel or urinary disturbance and fertility difficulties. While medical treatment can reduce symptoms for some individuals, surgery is frequently considered when pain persists, disease progresses, or quality of life is significantly affected.

Surgical treatment, however, is not defined solely by whether an operation is performed, but by how endometriotic tissue is managed during that operation. Different surgical techniques aim to address disease in different ways, and these choices have implications for symptom relief, risk of recurrence, and the need for repeat procedures. Two approaches dominate contemporary practice: excision and ablation. Although they are sometimes discussed as equivalent options, they are fundamentally different in both method and intent.

Many patients only learn about these differences after surgery, often when symptoms recur or when further treatment is recommended. At that point, questions arise about whether disease was fully removed, whether deeper lesions were adequately addressed and whether an alternative approach might have led to a different outcome. These concerns reflect a broader issue in endometriosis care: the surgical approach can shape long-term results as much as the decision to operate itself.

This article examines the distinction between excision and ablation surgery for endometriosis, explaining how each technique works and why the choice of approach matters for pain control, recurrence, fertility considerations and long-term disease management.

Understanding endometriosis lesions

Endometriosis does not present as a single, uniform type of disease. Lesions vary in depth, appearance and anatomical location, and these differences influence how the disease behaves and how it should be treated surgically. Recognising these variations is essential when considering the most appropriate surgical approach.

Superficial peritoneal endometriosis

Superficial lesions are confined to the surface of the pelvic peritoneum [1]. They may appear in a range of colours and forms and can be difficult to detect, particularly when disease is subtle or early. Although limited in depth, superficial lesions can still be associated with pain and local inflammation, and their appearance does not always reflect symptom severity.

Deep infiltrating endometriosis

Deep infiltrating endometriosis involves disease that extends beneath the peritoneal surface and into underlying tissues. Common sites include the uterosacral ligaments, bowel, bladder and vaginal wall. This form of endometriosis is often linked to more severe or complex symptoms and may alter normal pelvic anatomy. Because the disease penetrates deeper structures, surface-level treatment risks leaving active tissue behind.

Ovarian endometriomas

Ovarian endometriomas are cystic lesions within the ovary containing altered blood products [2]. Surgical management of these lesions requires particular care, as treatment must address the disease while preserving healthy ovarian tissue. This is especially relevant for individuals with fertility considerations or reduced ovarian reserve.

The type and location of endometriotic lesions determine how accessible the disease is during surgery and how completely it can be treated. These factors underpin the distinction between excision and ablation and help explain why different surgical techniques may lead to different long-term outcomes.

What is ablation surgery for endometriosis?

Ablation surgery treats endometriosis by destroying visible lesions on the surface of affected tissue rather than removing them [3]. The approach relies on thermal or energy-based methods to cauterise endometriotic implants and is directed at what can be seen during surgery.

In ablation procedures, instruments such as diathermy or laser are used to burn or vaporise endometriosis on the pelvic lining. The underlying tissue is left in place, and no sample is removed for histological examination. This means treatment is limited to the surface appearance of the disease rather than its full depth.

Because ablation targets surface lesions, it is most often applied to superficial peritoneal endometriosis [4]. It may be selected when disease appears limited or when surgical intervention is intended to be conservative. In some cases, patients experience short- to medium-term improvement in pain following ablation.

The limitation of ablation lies in the biological behaviour of endometriosis itself. Lesions frequently extend beneath the visible surface, with inflammatory and fibrotic components that are not addressed by surface destruction alone [5]. As a result, active disease may remain after treatment. Thermal energy can also alter tissue planes, which may complicate further surgery if symptoms recur.

Ablation therefore has a defined but restricted role in endometriosis surgery. Its outcomes depend heavily on lesion depth and distribution, factors that distinguish it clearly from excision-based approaches.

What is excision surgery for endometriosis?

Excision surgery treats endometriosis by physically removing lesions rather than destroying them on the surface. The objective is to cut out endometriotic tissue in its entirety, including its depth and surrounding margins, to address both visible and underlying disease.

During excision, the surgeon carefully dissects endometriotic lesions from the surrounding structures using sharp surgical techniques. This approach allows the full thickness of the lesion to be removed, even when disease extends beneath the surface or involves deeper tissues. The removed tissue is sent for histological examination, providing confirmation of the diagnosis.

Excision is commonly used for deep infiltrating endometriosis and for disease affecting structures such as the uterosacral ligaments, bowel, bladder, or ovaries [6]. It is also employed when previous treatment has failed or when symptoms suggest the presence of deeper disease that cannot be adequately managed with surface-based techniques.

The strength of excision lies in its ability to remove endometriosis more completely. By addressing the depth and extent of disease, excision is associated with more durable symptom relief and lower recurrence rates in many patients [7]. However, it is technically demanding and requires a high level of surgical expertise, particularly when vital organs are involved.

Excision surgery places greater emphasis on long-term disease control rather than short-term symptom reduction. For this reason, it is often considered the preferred approach in complex or extensive endometriosis, where incomplete treatment may lead to persistent symptoms or repeat surgery.

Key differences between excision and ablation

Excision and ablation differ in how endometriotic tissue is treated during surgery and in the extent to which disease is addressed. These differences influence symptom relief, recurrence risk, and the likelihood of requiring further intervention.

Aspect	Excision Surgery	Ablation Surgery
Surgical approach	Endometriotic tissue is cut out and removed completely	Endometriotic tissue is destroyed on the surface using thermal energy
Depth of treatment	Treats both visible and underlying disease	Limited to surface-visible lesions
Residual disease risk	Lower risk of leaving active disease behind	Higher risk of residual disease beneath the treated surface
Suitability by lesion type	Suitable for superficial, deep infiltrating, and complex disease	Mainly suitable for superficial peritoneal disease
Histological confirmation	Removed tissue can be sent for laboratory analysis	No tissue is removed for confirmation
Recurrence risk	Generally lower recurrence rates reported	Higher likelihood of symptom recurrence
Technical complexity	Technically demanding and surgeon-dependent	Less technically complex and quicker to perform
Role in repeat surgery	May reduce need for further procedures	May complicate future surgery due to thermal tissue changes

Pain relief and recurrence — what does the evidence show?

Pain relief is one of the main reasons endometriosis surgery is pursued, yet postoperative outcomes vary widely. Evidence comparing excision and ablation indicates that these differences are closely linked to the completeness of disease treatment during surgery.

Pain outcomes after excision

Clinical studies have shown that excision surgery is associated with more sustained improvement in pain symptoms, including pelvic pain, painful menstruation and deep dyspareunia [8]. This benefit is attributed to the removal of the full thickness of endometriotic lesions, including fibrotic and inflammatory components that contribute to ongoing pain.

Pain outcomes after ablation

Ablation has been shown to provide symptom relief in some patients, particularly in cases of superficial disease. However, pain reduction is more likely to be temporary [9]. Because ablation treats only surface-visible lesions, deeper disease may remain active, leading to persistent or returning symptoms.

Recurrence and repeat surgery

Comparative studies suggest higher recurrence rates and a greater likelihood of repeat surgery following ablation-based treatment, especially in patients with deep or multifocal disease [10]. Excision is associated with lower recurrence rates, with symptom return more often related to new disease development rather than incomplete removal.

It is important to recognise that endometriosis is a chronic condition. Surgery alone does not guarantee permanent symptom resolution, regardless of technique. However, current evidence supports excision as the approach more likely to provide durable pain relief when disease extends beyond the surface.

Fertility considerations

Fertility is a central concern for many people with endometriosis, and the choice of surgical technique can influence reproductive outcomes in different ways. The relationship between endometriosis surgery and fertility is complex, shaped by disease severity, lesion location, age and baseline ovarian reserve.

Impact of excision on fertility

Excision surgery aims to remove endometriotic disease in full, including deep and fibrotic lesions that may distort pelvic anatomy. In cases of deep infiltrating endometriosis, excision can restore normal anatomy around the ovaries, fallopian tubes and pelvic structures, potentially improving the chance of natural conception. Studies have shown improved spontaneous pregnancy rates following excision in selected patients, particularly where pain and anatomical distortion were significant contributors [11].

When ovarian endometriomas are present, excision requires careful technique. Removing the cyst wall may reduce inflammatory activity and improve access to follicles, but it also carries a risk of reducing ovarian reserve if healthy tissue is inadvertently removed. For this reason, excision in fertility-focused patients should be performed by surgeons experienced in fertility-preserving techniques.

Impact of ablation on fertility

Ablation may be used for superficial disease and is sometimes perceived as a more conservative option. However, because ablation does not remove underlying disease, its effect on fertility is less predictable. Residual endometriosis may continue to affect pelvic function or contribute to inflammation, which can impair fertility even when surface lesions appear treated.

In the context of ovarian endometriomas, ablation of the cyst lining is less commonly recommended, as it may be associated with higher recurrence rates and does not reliably address the inflammatory environment within the ovary.

Individualising surgical decisions

Fertility outcomes after endometriosis surgery depend not only on the technique used but also on timing, disease extent, and future reproductive plans. For some patients, surgery may be combined with assisted reproductive techniques rather than pursued as a standalone fertility treatment. A personalised approach, informed by imaging, fertility assessment and surgical expertise, is essential when weighing excision against ablation.

Risks, recovery and surgical expertise

All surgery for endometriosis carries inherent risks, but the nature and extent of these risks vary depending on the surgical approach and the complexity of the disease being treated. Understanding these differences is essential when considering long-term outcomes and recovery.

Surgical risks

Excision surgery is more technically demanding and may involve operating near or on organs such as the bowel, bladder, ureters or ovaries. As a result, it carries a higher risk of complications, including bleeding, infection, organ injury or the need for more extensive procedures [12]. These risks are closely linked to surgeon experience and the availability of a multidisciplinary team when deep or complex disease is present.

Ablation is generally associated with lower immediate surgical risk, particularly when limited to superficial disease. However, the use of thermal energy can damage surrounding tissue and obscure anatomical planes, which may complicate future surgery if symptoms recur.

Recovery considerations

Recovery time varies based on disease extent rather than surgical technique alone. Excision may involve a longer recovery period, especially when multiple organs are affected or when extensive dissection is required. Patients may experience more postoperative discomfort initially, but this must be weighed against the potential for longer-lasting symptom relief.

Ablation procedures are often associated with shorter operating times and faster initial recovery [13]. However, this advantage may be offset if further surgery becomes necessary due to persistent or recurrent symptoms.

Importance of surgical expertise

The success of endometriosis surgery depends heavily on the surgeon’s training and experience. Excision, in particular, requires advanced skills in recognising varied disease patterns and safely removing lesions from complex anatomical locations. Outcomes are generally better when surgery is performed by specialists with dedicated experience in endometriosis management.

Choosing a surgical approach should therefore involve not only a discussion of technique but also an honest assessment of surgical expertise, case volume and access to multidisciplinary care. These factors play a critical role in balancing risk, recovery and long-term benefit.

Making an informed decision about endometriosis surgery

Deciding to proceed with surgery for endometriosis is often the result of prolonged symptoms, multiple treatments and a desire for lasting relief. At this stage, understanding the surgical approach becomes as important as the decision to operate itself.

Patients are not always told which technique will be used or what that choice may mean for long-term outcomes. Asking direct questions about whether excision or ablation is planned, and why, can clarify expectations and help align treatment with individual goals. This is particularly important for those with persistent pain, suspected deep disease or fertility concerns.

An informed decision also involves discussing the surgeon’s experience with endometriosis, especially complex or deep infiltrating cases. Excision requires specific expertise and outcomes are closely linked to the surgeon’s familiarity with varied disease patterns and advanced pelvic anatomy. Where deep disease is suspected, access to a multidisciplinary team may be relevant. Taking time to understand the differences between excision and ablation empowers patients to participate actively in their care and to choose an approach that reflects both the nature of their disease and their longer-term priorities.

However, surgery should be viewed as one component of long-term endometriosis management rather than a standalone solution. Postoperative care, including medical therapy, pain management strategies, and fertility planning, plays a role in sustaining outcomes. 

Conclusion — Choosing the right surgical approach for endometriosis

Endometriosis surgery is not defined simply by whether treatment is performed, but by how the disease is addressed during the operation. Excision and ablation represent fundamentally different approaches, with distinct implications for pain relief, recurrence, fertility considerations and long-term management. Understanding these differences helps explain why some individuals experience lasting improvement after surgery while others continue to struggle with persistent or recurring symptoms.

Ablation may offer symptom relief in carefully selected cases of superficial disease, but its surface-based nature limits its ability to address deeper or infiltrative endometriosis. Excision, while more technically demanding, aims to remove disease in full and is better suited to managing complex or extensive involvement. Evidence increasingly supports excision as the approach more likely to provide durable outcomes, particularly in moderate to severe endometriosis, when performed by appropriately trained specialists.

However, there is no one-size-fits-all solution. Surgical decisions should be guided by the type and extent of disease, individual symptoms, reproductive goals and the experience of the surgical team. An informed discussion about surgical technique is a critical part of achieving realistic expectations and meaningful long-term benefit.

If you are experiencing ongoing symptoms of endometriosis or considering surgical treatment, a specialist consultation can help clarify the most appropriate approach for your situation. If you would like personalised advice, you may consider scheduling a consultation with Dr. Ma Li’s clinic to discuss assessment and surgical planning based on your specific needs.

References 

1. Pedrassani, M., Guerriero, S., Pascual, M. Á., Ajossa, S., Graupera, B., Pagliuca, M., Podgaec, S., Camargos, E., Vieira de Oliveira, Y., & Alcázar, J. L. (2023). Superficial endometriosis at ultrasound examination—A diagnostic criteria proposal. Diagnostics, 13(11), 1876. https://doi.org/10.3390/diagnostics13111876 
2. Ovarian endometrioma(Chocolate cyst). Cleveland Clinic. Retrieved December 23, 2025, from https://my.clevelandclinic.org/health/diseases/22004-ovarian-endometrioma 
3. Burks, C., Lee, M., DeSarno, M., Findley, J., & Flyckt, R. (2021). Excision versus ablation for management of minimal to mild endometriosis: A systematic review and meta-analysis. Journal of Minimally Invasive Gynecology, 28(3), 587–597. https://doi.org/10.1016/j.jmig.2020.11.028 
4. Riley, K. A., Benton, A. S., Deimling, T. A., Kunselman, A. R., & Harkins, G. J. (2019). Surgical excision versus ablation for superficial endometriosis-associated pain: A randomized controlled trial. Journal of Minimally Invasive Gynecology, 26(1), 71–77. https://doi.org/10.1016/j.jmig.2018.03.023 
5. Bignardi, T., Khong, S., & Lam, A. (2019). Excisional versus ablative surgery for peritoneal endometriosis. The Cochrane Database of Systematic Reviews, 2019(7), CD008979. https://doi.org/10.1002/14651858.CD008979.pub2 
6. Laganà, A. S., Vitale, S. G., Trovato, M. A., Palmara, V. I., Rapisarda, A. M. C., Granese, R., Sturlese, E., De Dominici, R., Alecci, S., Padula, F., Chiofalo, B., Grasso, R., Cignini, P., D’Amico, P., & Triolo, O. (2016). Full-thickness excision versus shaving by laparoscopy for intestinal deep infiltrating endometriosis: Rationale and potential treatment options. BioMed Research International, 2016, 3617179. https://doi.org/10.1155/2016/3617179 
7. Cao, Q., Lu, F., Feng, W.-W., Ding, J.-X., & Hua, K.-Q. (2015). Comparison of complete and incomplete excision of deep infiltrating endometriosis. International Journal of Clinical and Experimental Medicine, 8(11), 21497–21506. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4723943/ 
8. Kalra, R., McDonnell, R., Stewart, F., Hart, R. J., Hickey, M., & Farquhar, C. (2024). Excisional surgery versus ablative surgery for ovarian endometrioma. The Cochrane Database of Systematic Reviews, 2024(11), CD004992. https://doi.org/10.1002/14651858.CD004992.pub4 
9. Ouyang, C., Fitch, A., Cho, K. S., Driscoll, J., Wang, A., & Lamvu, G. (2022). Efficacy of excision versus ablation for improving endometriosis related pain: A systematic review and meta-analysis. Journal of Endometriosis and Pelvic Pain Disorders, 14(1), 52–62. https://doi.org/10.1177/22840265221074850 
10.  Kalra, R., McDonnell, R., Stewart, F., Hart, R. J., Hickey, M., & Farquhar, C. (2024). Excisional surgery versus ablative surgery for ovarian endometrioma. The Cochrane Database of Systematic Reviews, 11(11), CD004992. https://doi.org/10.1002/14651858.CD004992.pub4 
11. Manu, A., Poenaru, E., Duica, F., Stoleru, S., Bausic, A. I. G., Coroleuca, B.-C., Coroleuca, C.-A., Iacob, C., & Brătilă, E. (2025). Impact of minimally invasive surgery on quality of life and infertility in deep infiltrating endometriosis. Journal of Clinical Medicine, 14(20), 7256. https://doi.org/10.3390/jcm14207256 
12. Zanelotti, A., & DeCherney, A. H. (2017). Surgery and endometriosis. Clinical Obstetrics and Gynecology, 60(3), 477–484. https://doi.org/10.1097/GRF.0000000000000291 
13. Minalt, N., Canela, C. D., & Marino, S. (2025). Endometrial ablation. In StatPearls. StatPearls Publishing. http://www.ncbi.nlm.nih.gov/books/NBK459245/ 

Many women spend years searching for an explanation for symptoms that feel far from ordinary. Pain that disrupts work, relationships and daily routines is often dismissed as “bad periods”, while bowel or urinary discomfort is attributed to unrelated gastrointestinal or bladder conditions. Over time, this uncertainty can become exhausting. For a significant number of women, the underlying cause is a severe and often misunderstood form of endometriosis known as deep infiltrating endometriosis (DIE).

Deep infiltrating endometriosis refers to lesions that extend more than 5 millimetres beneath the peritoneum, the thin membrane lining the pelvic cavity [1]. This distinguishes it from superficial endometriosis, which remains on the surface of pelvic structures, and from ovarian endometriosis, which forms cysts on the ovaries. In DIE, the lesions burrow into supporting ligaments, pelvic nerves, and in many cases the bowel, bladder, rectovaginal septum or uterosacral ligaments. Because of this depth and multi-organ involvement, DIE is considered the most advanced and most challenging form of the condition.

The infiltrating nature of these lesions can distort pelvic anatomy, create dense scar tissue and affect organ function, leading to symptoms that vary widely and often mimic unrelated illnesses. This is one reason why women are frequently misdiagnosed or told that their symptoms are unrelated to gynaecological health. Globally, it takes an estimated seven to ten years from the onset of symptoms for many women to receive an accurate diagnosis, reflecting persistent gaps in awareness and access to specialised assessment [2].

Endometriosis affects around one in ten women worldwide [3], and while rates in Asia are similar, cultural stigma around menstrual pain, hesitancy to seek help and lack of early specialist referral have contributed to delays in diagnosis. In Singapore, rising awareness and increasing access to specialist endometriosis centres, high-resolution transvaginal ultrasound and pelvic MRI have improved diagnostic accuracy. More cases are now identified earlier, not because the condition has become more common, but because clinicians are better equipped to recognise deep disease.

As a result, women can now receive more timely treatment and guidance, yet DIE remains a condition that requires expertise, multidisciplinary care and individualised planning. Understanding how it behaves, why it is so complex and what makes it different from other forms of endometriosis is essential when navigating symptoms or considering treatment options.

In this blog, we will explore the different types of deep infiltrating endometriosis, why it is especially challenging to diagnose and treat, the latest treatment approaches available in Singapore and how women can seek timely, specialised care.

Types of Deep Infiltrating Endometriosis

Deep infiltrating endometriosis can affect several areas within the pelvis and the exact location of the lesions often influences the symptoms a woman experiences and the complexity of treatment required. Although the condition is defined by the depth of tissue infiltration, its behaviour varies depending on which structures or organs are involved. The most recognised types include:

• Uterosacral ligament involvement — Lesions growing within or around the uterosacral ligaments, often causing deep pelvic pain and discomfort during intercourse [4].

• Rectovaginal septum endometriosis — Tissue infiltration between the vagina and rectum, frequently associated with severe period pain, pain during bowel movements and discomfort during intimacy [5].

• Bowel endometriosis — Deep lesions affecting the rectum or sigmoid colon, leading to symptoms that may mimic irritable bowel syndrome, including bloating, diarrhoea, constipation or pain during defecation [6].

• Bladder and urinary tract endometriosis — Involvement of the bladder wall or ureters, which may cause painful urination, urinary frequency or blood in the urine [7].

• Extra-pelvic disease (rare) — Occasional spread to areas outside the pelvis, such as the diaphragm, which may cause shoulder pain or chest discomfort during menstruation [8].

What Makes Deep Infiltrating Endometriosis Difficult to Diagnose?

Deep infiltrating endometriosis is often overlooked in its early stages because its symptoms resemble many other pelvic and abdominal conditions. Even when women seek medical attention, the depth and behaviour of these lesions make them harder to identify without specialised assessment. Several factors contribute to the difficulty in reaching a timely diagnosis:

• Symptoms mimic other conditions — Bowel endometriosis can resemble irritable bowel syndrome, while urinary involvement may look like recurrent bladder infections, causing symptoms to be treated in isolation.

• Pain severity does not match disease severity — Some women with extensive deep disease report mild symptoms, while others with smaller lesions experience severe pain, leading to confusion during early evaluation.

• Standard ultrasound may miss deep lesions — Routine pelvic ultrasounds often detect ovarian cysts but may not identify deeply infiltrating nodules. Diagnosis usually requires expert transvaginal ultrasound or pelvic MRI.

• Overlapping presentations with pelvic floor disorders — Muscle tension, nerve pain or pelvic floor dysfunction can mask underlying deep infiltrating disease.

• Delayed referrals to specialists — Women may see multiple providers before being directed to an endometriosis-trained gynaecologist, contributing to diagnostic delays.

• Social and cultural stigma around menstrual pain — Many women normalise severe symptoms or hesitate to seek help, particularly in settings where period pain is dismissed as “expected”.

Why is Deep Infiltrating Endometriosis the Most Challenging Form to Treat

Deep infiltrating endometriosis is considered the most complex form of the disease because it extends into structures that are difficult to access, involves multiple organs and often causes long-standing inflammation and scarring. As a result, treatment requires careful planning, advanced surgical skill, and coordinated care across different specialties. The key reasons it is particularly challenging to treat include:

• Depth of tissue invasion — Lesions extend more than 5 mm beneath the peritoneum and can infiltrate ligaments, nerves and organ walls, making complete excision difficult without risking damage to nearby structures.

• Multi-organ involvement — Deep disease often affects the rectum, sigmoid colon, bladder or ureters, requiring combined surgery with colorectal or urology specialists.

• Distortion of normal anatomy — Long-standing inflammation creates dense fibrosis and adhesions, which obscure natural tissue planes and increase the complexity of surgery.

• Higher risk during surgery — Procedures involving the bowel or urinary tract carry specific risks such as fistula formation, nerve injury or complications related to bowel resection.

• Need for advanced surgical expertise — Successful treatment usually relies on minimally invasive techniques such as laparoscopic or robotic surgery performed by surgeons experienced in advanced endometriosis.

• Possibility of recurrence — Even with optimal excision, deep disease may return, especially when hormonal suppression is stopped or when lesions were too extensive to remove fully.

• Impact on fertility — DIE can affect the mobility of reproductive organs, distort pelvic anatomy, and cause inflammation that affects egg quality or implantation, requiring tailored fertility planning.

Symptoms of Deep Infiltrating Endometriosis

Deep infiltrating endometriosis can present in several ways and symptoms often depend on which organs are affected. Common symptoms include:

• Severe period pain (dysmenorrhoea)
• Pain during bowel movements (dyschezia)
• Pain during sexual intercourse (deep dyspareunia)
• Chronic pelvic pain
• Bloating, constipation or diarrhoea
• Painful urination or urinary frequency
• Blood in the urine when the urinary tract is involved
• Lower back or leg pain when nerves are affected

How is Deep Infiltrating Endometriosis Diagnosed in Singapore

Diagnosing deep infiltrating endometriosis requires careful evaluation and imaging methods that go beyond routine gynaecological tests, as deep lesions are easily missed without specialist assessment. 

• Clinical history and pelvic examination — a detailed discussion of symptoms, menstrual pain patterns, bowel or urinary issues and a gentle pelvic exam help identify areas of tenderness, nodularity or reduced organ mobility.

• Transvaginal ultrasound by an endometriosis-trained specialist — high-resolution scanning detects deep nodules, reduced ovarian mobility, fibrosis or bowel tethering that standard ultrasound techniques may overlook.

• Pelvic MRI — a comprehensive imaging method that visualises the depth of infiltration, involvement of the rectovaginal septum, bowel, bladder or ligaments, and provides essential information for surgical planning.

• Diagnostic laparoscopy — a minimally invasive keyhole procedure used when imaging is inconclusive or when treatment is being considered, allowing direct visual confirmation of deep lesions.

• Multidisciplinary evaluation — coordinated assessment with colorectal or urology specialists when bowel or urinary tract involvement is suspected, ensuring accurate diagnosis across all affected organs.

Treatment Options for Deep Infiltrating Endometriosis

Managing deep infiltrating endometriosis requires a tailored plan that considers the severity of symptoms, the organs involved and each woman’s goals regarding pain control, fertility, and long-term health. 

• Hormonal therapies — medications such as combined oral contraceptives, progestins, or GnRH analogues help suppress ovulation, reduce inflammation and ease pain, though they do not remove deep lesions.

• Pain management strategies — targeted analgesics, anti-inflammatory medication and pelvic physiotherapy are used to manage chronic pain and improve day-to-day function.

• Laparoscopic excision surgery — minimally invasive surgery performed by an endometriosis-trained specialist to remove deep lesions, release adhesions and restore normal pelvic anatomy where possible.

• Robotic-assisted surgery — an option for complex cases where enhanced precision and visualisation improve access to difficult-to-reach lesions involving nerves, ligaments or the bowel.

• Bowel or urinary tract surgery — coordinated procedures with colorectal or urology specialists when deep disease affects the rectum, sigmoid colon, bladder or ureters, ensuring safe and complete treatment.

• Post-surgical hormonal suppression — medication recommended after surgery to reduce the likelihood of recurrence and maintain symptom control over the long term.

• Fertility-focused care — planning that may involve surgical optimisation, assisted reproductive techniques such as IVF or collaboration with fertility specialists when conception is a priority.

Fertility and Deep Infiltrating Endometriosis

Deep infiltrating endometriosis can affect fertility because of the way it disrupts the normal function and positioning of reproductive organs [9]. When lesions form deep within the pelvis, they can pull the ovaries and fallopian tubes out of their natural alignment or restrict their movement, making it harder for an egg to be released, picked up by the tube or transported effectively. Long-standing inflammation around these structures can also interfere with egg quality and create an environment that makes implantation less likely. In some women, the disease may contribute to a lower ovarian reserve, particularly when the ovaries have been affected for many years [10]. 

Surgical removal of deeply infiltrating lesions can improve pelvic function for selected patients, especially when adhesions are limiting the mobility of reproductive organs. However, when the anatomical changes are extensive or when age and ovarian reserve make natural conception less likely, assisted reproductive options such as IVF may offer a clearer and more predictable route to pregnancy. A coordinated approach between gynaecologists and fertility specialists helps ensure that each woman receives guidance that reflects her individual circumstances, reproductive goals and the extent of her condition.

Living With Deep Infiltrating Endometriosis – Quality of Life and Long-Term Support

Living with deep infiltrating endometriosis often means managing symptoms that affect far more than physical health. Chronic pelvic pain, fatigue and discomfort with bowel or urinary functions can influence work, relationships and overall wellbeing, especially when symptoms fluctuate or intensify around menstruation. Many women also experience a sense of frustration or uncertainty after years of unexplained pain, making emotional support an equally important part of long-term care. 

Ongoing management may include pain-relief strategies, hormonal therapy, pelvic physiotherapy and lifestyle adjustments that help reduce inflammation and improve day-to-day comfort. For women who have undergone surgery, follow-up care is essential to maintain progress, monitor for recurrence and adjust treatment as needed. Open communication with healthcare providers, access to multidisciplinary support and a personalised plan that evolves with a woman’s needs can make a meaningful difference in how she navigates life with deep infiltrating endometriosis, helping her regain control, confidence and clarity about her long-term health.

When to See an Endometriosis Specialist in Singapore

Recognising when to seek specialist care can make a meaningful difference in managing deep infiltrating endometriosis, especially when symptoms persist or disrupt daily life.

• Severe period pain that interferes with work, school or routine activities
• Pelvic pain that continues outside the menstrual period
• Pain during bowel movements, sexual intercourse or urination
• Persistent gastrointestinal symptoms that do not improve with standard treatment
• Difficulty conceiving after six to twelve months of trying
• Recurring ovarian cysts or suspected endometriomas
• Symptoms that worsen over time or return despite previous treatment
• Uncertainty about a previous diagnosis or the need for a second opinion

Conclusion – Early Specialist Care Improves Outcomes

Deep infiltrating endometriosis is one of the most challenging forms of the condition because it affects structures deep within the pelvis, often involving the bowel, bladder and supporting ligaments. Its symptoms are varied and easily mistaken for other disorders, which explains why so many women endure years of discomfort before receiving a clear diagnosis. With better awareness, improved imaging techniques and increasing access to endometriosis-trained specialists in Singapore, more women are now receiving the evaluations they need at an earlier stage. 

Effective management relies on understanding the depth and extent of the disease, choosing treatment approaches that match individual goals and ensuring continuity of care to support long-term wellbeing. Whether the focus is pain relief, fertility planning or restoring daily comfort, timely intervention can make a considerable difference in both health outcomes and quality of life.

If you have been experiencing persistent pelvic pain, severe menstrual symptoms or concerns that your condition may be more complex, seeking a specialist assessment is an important first step. To discuss your symptoms, explore treatment options or receive a detailed evaluation, you may schedule a consultation with Dr Ma Li for personalised care and guidance.

References 

1. Pszczołowska, M., Walczak, K., Kołodziejczyk, W., Kozłowska, M., Kozłowski, G., Gachowska, M., & Leszek, J. (2025). Understanding deep endometriosis: From molecular to neuropsychiatry dimension. International Journal of Molecular Sciences, 26(2), 839. https://doi.org/10.3390/ijms26020839 
2. Frankel, L. R. (January, 2022). A 10-year journey to diagnosis with endometriosis: An autobiographical case report. Cureus, 14(1), e21329. https://doi.org/10.7759/cureus.21329 
3. Endometriosis. Retrieved November 18, 2025, from https://www.who.int/news-room/fact-sheets/detail/endometriosis 
4. Bloski, T., & Pierson, R. (2008). Endometriosis and chronic pelvic pain. Nursing for Women’s Health, 12(5), 382–395. https://doi.org/10.1111/j.1751-486X.2008.00362.x 
5.  Rectovaginal endometriosis: Symptoms, diagnosis, and management. (2018, December 13). https://www.medicalnewstoday.com/articles/323993 
6. Al Ayoubi, O., Aldakak, M. A., Alabdullah, N., Alabdullah, F., & Alasfar, A. (2025). Sigmoid colon endometriosis as an uncommon cause of large bowel obstruction: A case report. International Journal of Surgery Case Reports, 135, 111927. https://doi.org/10.1016/j.ijscr.2025.111927 
7. Bladder endometriosis. The Endo Foundation. Retrieved November 17, 2025, from https://www.theendometriosisfoundation.org/bladder-endometriosis 
8. de Matos, R. T. M., Mendes, M. C., Andrade, M. C. R., Verruma, C. G., Ferriani, R. A., & dos Reis, R. M. (2025). Diaphragmatic endometriosis associated with pelvic endometriosis: A case report. BMC Women’s Health, 25, 295. https://doi.org/10.1186/s12905-025-03847-4 
9. Bonavina, G., & Taylor, H. S. (2022). Endometriosis-associated infertility: From pathophysiology to tailored treatment. Frontiers in Endocrinology, 13, 1020827. https://doi.org/10.3389/fendo.2022.1020827 
10. Lee, D., Kim, S. K., Lee, J. R., & Jee, B. C. (2020). Management of endometriosis-related infertility: Considerations and treatment options. Clinical and Experimental Reproductive Medicine, 47(1), 1–11. https://doi.org/10.5653/cerm.2019.02971 

For many women, period pain is an unwelcome but familiar visitor — something to be managed with painkillers, rest and the reassurance that it’s “normal.” But what if it isn’t? Imagine a young woman in her twenties, curled up on her bathroom floor every month, told time and again by doctors that her pain is simply part of being a woman. Years pass. Her pain worsens. Only after countless appointments, tests and tears does she finally learn the truth: she has endometriosis.

Endometriosis is a long-term condition in which tissue similar to the lining of the womb grows outside it, on the ovaries, fallopian tubes, bowel or other pelvic organs. It can cause severe pain, heavy bleeding, fatigue and in some cases, fertility problems. Despite being estimated to affect around one in ten women of reproductive age, it remains one of the most frequently misdiagnosed gynaecological conditions [1]. Studies show that it can take anywhere from seven to ten years for women to receive an accurate diagnosis [2].

This isn’t just a medical issue; it’s a social one. Delayed diagnosis means years of unmanaged pain, emotional strain, and disruptions to work, relationships and fertility plans. Many women are dismissed, told they are overreacting or misdiagnosed with conditions like irritable bowel syndrome or anxiety. The result is a painful mix of physical suffering and psychological frustration, a feeling of being unheard in one’s own body.

This blog explores why endometriosis continues to be misdiagnosed despite its prevalence. It delves into the medical, cultural and systemic factors behind these delays and shares real stories of women who endured years of uncertainty before finally being taken seriously. Through their experiences, we aim to understand not only why this problem persists, but also how awareness, empathy and better medical understanding can change the course for others still searching for answers.

What is Endometriosis?

Endometriosis is a chronic, often painful condition in which tissue similar to the lining of the womb, called the endometrium, grows in places where it doesn’t belong. These growths can occur on the ovaries, fallopian tubes, outer surface of the uterus or other pelvic organs. Each month, just like the uterine lining, this tissue thickens and bleeds in response to hormonal changes. However, unlike menstrual blood, it has no way to leave the body. Over time, this trapped tissue can cause inflammation, scarring and the formation of adhesions, bands of fibrous tissue that can bind organs together and cause significant pain.

According to Yale Medicine, endometriosis affects around one in ten women of reproductive age, a figure echoed by multiple studies worldwide [3]. However, experts believe the real number is likely much higher because many cases go undiagnosed or are mistaken for other conditions. Research highlights that delayed or missed diagnosis remains one of the most pressing challenges in women’s health today, with symptoms often misunderstood or minimised [4].

The symptoms of endometriosis can vary dramatically from one person to another. The most common include pelvic pain that intensifies during menstruation, chronic lower back or abdominal pain, pain during or after sexual intercourse, heavy or irregular menstrual bleeding, bloating and digestive disturbances. Some women experience severe fatigue, while others struggle with fertility; in fact, endometriosis is among the leading causes of infertility in women.

What makes the condition particularly challenging is its unpredictability. Some women with extensive endometrial growths may feel little to no discomfort, while others with minimal lesions experience crippling pain. This inconsistency often complicates diagnosis, leading to years of trial, error, and frustration before the condition is correctly identified.

Endometriosis is not simply “bad period pain,” it is a complex medical disorder that requires awareness, timely recognition, and sensitive care. Understanding its nature is the first step towards addressing the widespread delays and misconceptions that surround it.

The Diagnostic Journey of Endometriosis: Typical Delays and Misdiagnoses 

The diagnostic journey for Endometriosis is one marked by frustration, missed cues and prolonged uncertainty. Studies consistently show that from the time a woman first experiences symptoms to the moment she receives an accurate diagnosis can take several years. A review found diagnostic intervals of up to seven to ten years between symptom onset and confirmed diagnosis [5]. In another major analysis, the average diagnostic delay worldwide was 6.8 years (ranging from 1.5 to 11.4 years), underscoring the global scale of the issue [6].

One of the main reasons for this delay is that endometriosis often mimics other conditions. Many women are initially treated for problems such as irritable bowel syndrome (IBS), urinary tract infections, ovarian cysts, or fibroids. In some cases, their symptoms are mistaken for pelvic inflammatory disease or even dismissed as stress-related pain. 

For instance, studies have found that women with endometriosis are significantly more likely to also receive a diagnosis of IBS [7], reflecting both the overlap in symptoms and the challenges of accurate detection. Statistics show how widespread this problem is, with some reports estimating average diagnostic delays of up to nine years [8]. Healthcare reviews have described these long intervals as common even among women experiencing severe, disabling symptoms. Each year lost in uncertainty is not merely a statistic; it represents years of unmanaged pain, ineffective treatments and emotional exhaustion.

For many women, the journey to diagnosis involves countless appointments and repeated explanations of symptoms that are often minimised or misunderstood. This prolonged process not only delays relief and treatment but also allows the disease to progress, sometimes leading to more extensive complications. Understanding why these delays happen is crucial to improving early recognition and ensuring women’s pain is finally taken seriously.

Why Misdiagnosis and Delay Happen in Endometriosis: Contributing Factors

The reasons behind the frequent misdiagnosis and delayed detection of endometriosis are multifaceted, spanning personal, medical and systemic levels. 

Patient-related factors

In many cultures, menstrual pain is seen as an unavoidable part of womanhood. Girls often grow up hearing that cramps and heavy periods are “normal,” which can make them less likely to seek medical help early. Even when they do, the tendency to minimise or normalise pain often leads to underreporting of symptoms. Many women delay consulting a doctor simply because they believe their experiences are typical of menstruation. Shame and cultural stigma surrounding discussions about reproductive health also play a role, discouraging open conversations and timely care.

Provider-related factors

At the primary-care level, endometriosis can be challenging to identify because its symptoms overlap with a wide range of other conditions. General practitioners often see patients presenting with pelvic pain, bloating or fatigue, signs that may initially resemble irritable bowel syndrome, urinary infections or stress-related discomfort. The variability of symptoms makes it difficult to recognise a consistent pattern and diagnostic imaging can add further complexity, as scans and ultrasounds may not always reveal smaller or deep-seated lesions. Given these challenges, and the limited training opportunities in specialist gynaecology available in some settings, healthcare providers may understandably focus on more common explanations first. This can unintentionally lead to delays in referral or diagnosis.

Systemic and methodological factors

The most common method for confirming endometriosis remains laparoscopy, a minimally invasive surgical procedure that allows direct visualisation of the lesions. Because it is surgical, it’s often reserved for advanced cases or when other explanations have been ruled out, delaying formal diagnosis. Healthcare systems with limited specialist services, long waiting times and inconsistent referral pathways add further obstacles. 

Symptom overlap and variability

Endometriosis rarely presents the same way in two people. The condition can affect different organs and manifest as gastrointestinal pain, urinary symptoms or severe fatigue, depending on where the tissue grows. This diversity makes it easy to misattribute symptoms to other disorders, resulting in fragmented treatment and years of uncertainty.

Collectively, these factors form a web of delay; one reinforced by societal silence, medical uncertainty and structural limitations. Breaking this cycle requires not only medical advancement but also cultural change, where women’s pain is heard, believed and investigated with the seriousness it deserves.

Endometriosis in Singapore: Stories of Delayed Diagnosis

Statistics tell one story, but the human experience behind them reveals another, one of endurance, confusion and also strength. Over the years, Dr Ma Li has met many women whose paths to an endometriosis diagnosis were long and difficult. Each journey is unique, yet the pattern of delayed recognition and repeated misdiagnosis is all too familiar. Here are a few stories from our patients, shared anonymously, that highlight how these experiences affect daily life, work and emotional wellbeing.

A university student in her twenties

She began experiencing sharp pelvic cramps in her late teens. Each month, the pain left her unable to attend classes or social events, but she was repeatedly told that some women simply have “painful periods.” After years of medication changes and dismissals, a laparoscopy finally revealed endometriosis on her ovaries and pelvic wall. The delayed diagnosis brought both relief and frustration, relief to finally have an explanation and frustration that it had taken six years to be believed.

A young professional

For nearly a decade, she battled bloating, nausea and unpredictable bowel habits. She was treated for irritable bowel syndrome, gastritis and even anxiety before imaging revealed deep endometriotic lesions on her bowel and bladder. Living with undiagnosed pain had affected her work performance and confidence, leaving her fearful of being seen as unreliable.

A mother in her thirties

Heavy, painful periods had been part of her life since adolescence, but she learned to push through them. Over time, chronic fatigue and back pain forced her to take repeated sick leave, and she was told it might be fibroids or depression. A specialist referral finally led to a diagnosis of endometriosis, nearly twenty years after her first symptoms. By then, she had lost her job and much of her confidence.

These experiences show what statistics alone cannot: that behind every delayed diagnosis lies a life interrupted. Years of uncertainty can erode not only physical health but also self-trust and emotional wellbeing. Recognising these experiences is key to improving awareness, shortening diagnostic timelines, and ensuring women’s pain is never dismissed as “just period pain.”

Consequences of Mis- and Delayed Diagnosis in Endometriosis

When endometriosis is not diagnosed early, the effects extend far beyond physical discomfort. The stories of our patients shared earlier: the student who lost years of education to unexplained pain, the professional who struggled to stay employed and the mother who endured decades before being believed reflect just how far-reaching these consequences can be.

Physical consequences

For many women, the longer endometriosis remains undiagnosed, the more advanced it becomes. In our patients’ cases, repeated delays allowed the condition to progress, leading to dense adhesions and more extensive lesions that required surgical treatment. Chronic inflammation can damage the ovaries and fallopian tubes, reducing fertility and making conception more difficult. Some of our patients only discovered the condition after facing challenges with pregnancy or undergoing fertility screening. By this stage, management becomes more complex, and treatment may involve a combination of surgery and hormonal therapy to control symptoms and preserve reproductive health.

Emotional and social consequences

The emotional toll of being dismissed or misdiagnosed for years is immense. Several of our patients shared how they began doubting their own pain after being told that their symptoms were “normal” or “stress-related.” Living with unpredictable flare-ups while trying to maintain relationships, careers or studies led to exhaustion, frustration, and in some cases, anxiety or depression. The feeling of being unheard, of having to justify one’s pain, was often described as more distressing than the physical discomfort itself. Restoring emotional wellbeing after such experiences takes time, empathy, and validation.

Economic and life impact

The economic and social costs of delayed diagnosis are also significant. As seen in the stories we shared, chronic pain and fatigue forced some patients to take extended medical leave or leave their jobs altogether. Others struggled to meet academic deadlines or manage household responsibilities. These disruptions don’t just affect individual lives; they have wider implications for productivity and quality of life. When women spend years searching for answers, they lose not only time but also opportunities for advancement, stability, and confidence.

The experiences of our patients highlight that endometriosis is not simply a gynaecological condition but a whole-person disease, one that affects physical health, emotional wellbeing and life trajectory. Early diagnosis and compassionate care can change this story, giving women the chance to live without years of uncertainty and pain.

What Can Be Done to Improve Endometriosis Diagnosis and Awareness

The stories and experiences of our patients underline one crucial truth — delayed diagnosis is not inevitable. With greater awareness, improved training, and more open conversations about women’s health, the long diagnostic journey that so many endure can be shortened. Addressing this issue requires action at every level — from individuals recognising when something isn’t right, to healthcare providers and policymakers creating systems that support early and accurate diagnosis.

For individuals

Awareness begins with listening to your body and acknowledging that severe or persistent period pain is not normal. Many of our patients delayed seeking specialist help because they believed their discomfort was something they had to endure. Recognising patterns, such as pain that interferes with work, school or daily activities is key. Women are encouraged to document their symptoms, track their cycles and advocate for further investigation when pain persists. Seeking a referral to a gynaecologist with experience in endometriosis can make a significant difference in achieving timely diagnosis and effective management.

For clinicians

Healthcare professionals play an essential role in changing the narrative around endometriosis. Greater awareness and training at the primary-care level can help doctors recognise that symptoms such as chronic pelvic pain, bowel disturbance or fatigue may indicate something more than common menstrual discomfort. Our patients’ stories show that early referral to a specialist can prevent years of unnecessary suffering. Clinicians are encouraged to take pain reports seriously, even when imaging or test results appear inconclusive, and to consider endometriosis as part of the differential diagnosis rather than a last resort.

For systems and policy

Broader systemic improvements are needed to close the diagnostic gap. Endometriosis remains underfunded and underrepresented in research, despite affecting millions worldwide. Investment in non-invasive diagnostic tools, such as advanced imaging and biomarker testing, could reduce reliance on surgical confirmation through laparoscopy. Clearer clinical guidelines, streamlined referral pathways and multidisciplinary women’s health services would also ensure patients receive faster, more coordinated care. At the policy level, nationwide awareness campaigns and education initiatives can help normalise open discussion about menstrual and reproductive health, reducing stigma and encouraging earlier consultation.

Early diagnosis changes lives. Each step, whether a woman trusting her instincts, a doctor asking one more question or a health system improving its support structures brings us closer to a future where endometriosis is recognised promptly, treated effectively and no longer allowed to silence the women it affects.

Conclusion: The Path Ahead and Hope for Women with Endometriosis

Endometriosis is far more common than most people realise, yet it continues to be one of the most misdiagnosed and misunderstood conditions in women’s health. The stories shared by our patients reflect what research consistently shows: that delayed diagnosis can affect every aspect of life, from physical health and fertility to emotional wellbeing and work. Too often, women spend years being told their pain is “normal,” when in truth it signals something far more serious.

Yet there is hope. Awareness of endometriosis is growing, and more women are being encouraged to speak openly about their symptoms. Medical understanding has advanced in recent years and specialists now have better tools and treatment options than ever before. Each patient who finds the courage to seek help and each clinician who listens without dismissal, moves us closer to breaking the silence that has surrounded this condition for too long. The resilience of those living with endometriosis serves as a reminder that progress is possible. With earlier recognition and compassionate care, women can regain control of their health and quality of life.

If you are experiencing ongoing pelvic pain, heavy periods or symptoms that disrupt your daily activities, do not ignore them. Schedule a consultation with Dr Ma Li’s clinic to discuss your concerns, receive a thorough assessment and explore the most appropriate treatment options for you. Early diagnosis and the right care can make all the difference.

References

1. Endometriosis. Retrieved October 31, 2025, from https://www.who.int/news-room/fact-sheets/detail/endometriosis 
2. De Corte, P., Klinghardt, M., von Stockum, S., & Heinemann, K. (2025). Time to diagnose endometriosis: Current status, challenges and regional characteristics—a systematic literature review. Bjog, 132(2), 118–130. https://doi.org/10.1111/1471-0528.17973 
3. Endometriosis. Yale Medicine. Retrieved October 31, 2025, from https://www.yalemedicine.org/conditions/endometriosis 
4. Hudson, N. (2021). The missed disease? Endometriosis as an example of ‘undone science.’ Reproductive Biomedicine & Society Online, 14, 20–27. https://doi.org/10.1016/j.rbms.2021.07.003 
5. De Corte, P., Klinghardt, M., von Stockum, S., & Heinemann, K. (2025). Time to diagnose endometriosis: Current status, challenges and regional characteristics—a systematic literature review. Bjog, 132(2), 118–130. https://doi.org/10.1111/1471-0528.17973 
6. Fryer, J., Mason-Jones, A. J., & Woodward, A. (2025). Understanding diagnostic delay for endometriosis: A scoping review using the social-ecological framework. Health Care for Women International, 46(3), 335–351. https://doi.org/10.1080/07399332.2024.2413056 
7. Chiaffarino, F., Cipriani, S., Ricci, E., Mauri, P. A., Esposito, G., Barretta, M., Vercellini, P., & Parazzini, F. (2021). Endometriosis and irritable bowel syndrome: A systematic review and meta-analysis. Archives of Gynecology and Obstetrics, 303(1), 17–25. https://doi.org/10.1007/s00404-020-05797-8 
8. Ellis, K., & Wood, R. (2024). A decade to wait: Update on the average delay to diagnosis for endometriosis in Aotearoa New Zealand. The Australian & New Zealand Journal of Obstetrics & Gynaecology, 64(5), 524–529. https://doi.org/10.1111/ajo.13836 

At first, Anna thought it was normal. Painful periods ran in her family, and she assumed her exhaustion and stomach upsets were simply part of the same pattern. But when the discomfort spread beyond her cycle—nagging leg pain, sudden bloating, and even breathlessness—she began to wonder if something else was wrong. Years of appointments followed, each ending with a different label: stress, irritable bowel, urinary infection. Only much later did she hear the word that tied it all together—endometriosis.

Anna’s journey is one shared by countless women worldwide. Endometriosis is not a rare condition; it affects around one in ten women of reproductive age, yet the path to diagnosis remains astonishingly long [1]. On average, it takes close to a decade for many women to receive answers [2]. During those years, symptoms are often dismissed, misattributed or minimised. Pain is written off as a normal part of womanhood, fatigue as stress, bowel and bladder issues as unrelated conditions. Each misstep delays not only relief but also the chance to protect fertility, preserve quality of life and prevent the disease from advancing.

The difficulty lies in the way endometriosis reveals itself. Unlike illnesses with a single hallmark symptom, it wears many disguises. Some women experience crushing pelvic pain, while others notice unexplained digestive trouble, nerve pain in the legs or even chest discomfort that arrives in rhythm with their cycle. Because these signs don’t appear to be gynaecological at first glance, women are sent from one specialist to another without anyone seeing the bigger picture.

This blog seeks to pause that cycle of misunderstanding. By highlighting seven subtle symptoms that often slip under the radar, it offers a clearer lens through which women can recognise patterns in their own bodies and seek help sooner. Awareness cannot shorten every delay, but it can make the road to answers less isolating and the journey toward treatment less uncertain.

 

What is Endometriosis and Why Do Symptoms Vary?

Endometriosis is a chronic gynaecological condition in which tissue similar to the lining of the womb grows outside the uterine cavity. These deposits respond to monthly hormonal changes in the same way as the endometrium: they thicken, break down and bleed. Unlike menstrual blood, however, this bleeding has no natural outlet. The trapped tissue provokes inflammation, leading over time to scarring, ovarian cysts (endometriomas) and adhesions that may bind organs together and distort pelvic anatomy.

Although the pelvis is the most common site, particularly the ovaries, fallopian tubes, and peritoneum, endometriosis is not confined to these structures. Studies suggest that the bowel is affected in roughly 5–12% of cases [3], while the urinary tract is involved in around 1–2% [4]. In rare instances, lesions may extend to the diaphragm or chest cavity, with some surgical reports detecting diaphragmatic disease in up to 5% of women undergoing endometriosis surgery [5]. Nerve involvement, including the sciatic nerve or lumbosacral plexus, has also been documented [6].

This wide distribution explains why symptoms differ so greatly between women. For some, the disease manifests as severe menstrual pain, while others experience gastrointestinal disturbance, urinary complaints, nerve-related leg pain or even cyclical chest discomfort. The variability of symptoms is one of the key reasons endometriosis often goes unrecognised or is mistaken for unrelated conditions, contributing to long delays in diagnosis.

 

7 Signs of Endometriosis That Often Go Unnoticed

Endometriosis is best known for causing painful periods, but its impact can extend far beyond that. Depending on where the endometrial deposits form, women may experience symptoms that affect the digestive system, bladder, nerves or even the chest. Because these problems often resemble unrelated conditions, they are frequently overlooked or treated in isolation, leaving the underlying cause unrecognised.

In the following section, we outline seven subtle symptoms that are commonly missed. Understanding these signs and noticing when they follow a cyclical pattern linked to menstruation can help women and clinicians identify endometriosis earlier, leading to more accurate diagnosis and timely care.

1. IBS-Like Flares That Track Your Cycle

Gastrointestinal discomfort is a frequent but under-recognised feature of endometriosis [7]. Women often report bloating, abdominal cramping, alternating constipation and diarrhoea or pain when passing stool. Because these symptoms overlap so closely with irritable bowel syndrome (IBS), they are commonly treated as a digestive disorder rather than a gynaecological one. What sets endometriosis apart is the timing: flares tend to follow a cyclical pattern, often intensifying in the days before menstruation and during the period itself.

This connection reflects the way endometriosis interacts with the bowel. In some women, lesions directly infiltrate the rectum or sigmoid colon, causing inflammation and narrowing. In others, widespread pelvic inflammation disrupts bowel function, while hormonal shifts across the cycle further influence motility. Studies consistently show that women with endometriosis are more likely to report IBS-type symptoms compared with the general population, underscoring how easily the two conditions are confused [8].

For many, this overlap means years of misdirected treatment for presumed IBS before endometriosis is considered. Recognising that digestive symptoms flare in rhythm with the menstrual cycle can provide a critical clue, and should prompt further investigation, particularly if these symptoms occur alongside pelvic pain or other signs of endometriosis.

2. Urinary Problems That Resemble Recurrent Infections

Urinary complaints are another overlooked sign of endometriosis. Women may notice frequent urges to urinate, pain or burning during urination, or discomfort in the lower abdomen and back. At times, there may even be visible blood in the urine around menstruation. Because these symptoms resemble recurrent urinary tract infections (UTIs), many women are repeatedly treated with antibiotics despite urine cultures often returning negative.

The underlying cause is that endometriosis can affect the bladder or ureters. Lesions within the bladder wall may bleed cyclically, producing urinary pain or haematuria. When the ureters are involved, they can become narrowed or obstructed, leading to flank pain or, in severe cases, kidney damage if left untreated. Even when the urinary tract is not directly infiltrated, inflammation in the surrounding pelvic tissue can irritate the bladder and cause urgency and frequency.

Studies suggest that urinary tract involvement occurs in about 1–2% of women with endometriosis, though the figure is likely higher in cases of deep disease [9]. The problem is often overlooked because urinary symptoms are so easily attributed to infection or overactive bladder. The key distinction lies in the cyclical pattern: symptoms that worsen or appear around menstruation should raise suspicion of endometriosis.

Women experiencing recurrent UTI-like symptoms, particularly when urine tests do not confirm infection, should be assessed for possible bladder or ureteric endometriosis. Early recognition can prevent unnecessary antibiotic use and protect long-term kidney and urinary health.

3. Heavy or Irregular Periods

Changes in menstrual flow are among the most frequent manifestations of endometriosis, but they are not always recognised as part of the condition. Many women experience periods that are noticeably heavier than average, sometimes lasting longer than seven days or accompanied by large clots. Others report cycles that are unpredictable, with bleeding that arrives too early, too late, or irregular spotting before the period begins. Because heavy or erratic bleeding is often explained away as hormonal imbalance or attributed to fibroids, its association with endometriosis is frequently missed.

The biological mechanisms help explain these changes. Endometrial-like tissue outside the womb provokes inflammation, which interferes with the uterus’s normal ability to contract and control blood loss. In addition, many women with endometriosis also have adenomyosis, a condition where the lining of the womb grows into the muscle wall. This makes the uterus thicker, more fragile and more prone to both prolonged bleeding and painful cramping.

Persistent heavy or irregular periods should never be dismissed as “normal.” When these patterns occur alongside pelvic pain or fertility concerns, they should raise suspicion of endometriosis even if ultrasound findings appear unremarkable. Recognising abnormal menstrual bleeding as part of the wider symptom spectrum can shorten the diagnostic journey and allow women to access appropriate treatment earlier.

4. Chronic Pelvic Pain

Pelvic pain is one of the most characteristic signs of endometriosis, but its pattern is often misunderstood. Many women experience pain that goes beyond the expected discomfort of menstruation. It may begin before a period, intensify during menstruation and then persist into the days or weeks that follow. Some women also report pain during ovulation, while others live with a constant dull ache in the pelvis, lower back or hips that flares unpredictably. Because the pain does not always follow a predictable cycle, it is sometimes misattributed to musculoskeletal strain, stress or gastrointestinal problems.

The mechanisms behind chronic pelvic pain are complex. Endometrial lesions bleed and trigger inflammation during each cycle, irritating the surrounding tissue. Adhesions that form over time can tether pelvic organs, creating a pulling or dragging sensation. Repeated inflammation can also sensitise the nervous system, making pain more constant and harder to manage. Involvement of the uterosacral ligaments or pelvic floor muscles often contributes to deep, pressure-like pain that worsens with movement or sexual activity.

Chronic pelvic pain that disrupts daily life should not be dismissed as routine period discomfort. When pain requires strong medication, interferes with work or relationships or persists outside of menstruation, it should prompt assessment for endometriosis. 

5. Pain During or After Sex

Painful intercourse, particularly deep pain during penetration, is a common but often overlooked sign of endometriosis [10]. Many women describe a sharp or aching sensation felt high in the vagina or deep in the pelvis, sometimes persisting long after intimacy. Because the symptom is sensitive to discuss, women may downplay or avoid mentioning it and clinicians may hesitate to ask directly. As a result, it is frequently under-recognised as part of the endometriosis spectrum.

This pain usually arises when endometrial lesions affect structures such as the uterosacral ligaments, cul-de-sac (pouch of Douglas), or pelvic floor. During intercourse, these areas are stretched or compressed, triggering discomfort. Chronic inflammation can also make pelvic muscles tighten reflexively, compounding the pain. Over time, fear of pain may lead to avoidance of sexual activity, affecting emotional wellbeing and intimate relationships.

Pain during or after sex is not “normal” and should not be dismissed as psychological or stress-related. When it occurs consistently, especially alongside other gynaecological or bowel symptoms, it warrants careful evaluation for endometriosis. Addressing the cause can improve not only physical comfort but also quality of life and intimate relationships, which are often strained by unrecognised disease.

6. Debilitating Fatigue

Fatigue is one of the most pervasive but least acknowledged symptoms of endometriosis. Many women describe a deep, unrelenting tiredness that is not relieved by rest or sleep. This exhaustion often worsens in the days before and during menstruation but can also linger throughout the month. Because fatigue is such a non-specific complaint, it is frequently attributed to stress, anaemia, thyroid disorders or the pressures of daily life, leaving its link to endometriosis overlooked.

The causes of fatigue in endometriosis are multi-layered. Chronic inflammation associated with the disease releases chemical signals that affect the immune and nervous systems, producing systemic tiredness. Persistent pain disrupts sleep and drains energy, while heavy menstrual bleeding can contribute to iron deficiency, compounding exhaustion. The emotional toll of living with ongoing pain and uncertainty also plays a significant role.

This symptom can have a profound impact on work, relationships and overall quality of life. Women may find themselves unable to maintain routines or keep up with responsibilities, further heightening the sense of frustration that accompanies delayed diagnosis. Recognising fatigue as part of the broader picture of endometriosis is important. When persistent exhaustion occurs in combination with menstrual irregularities, pelvic pain or other subtle signs, it should prompt consideration of the condition.

7. Pain with Bowel Movements or Cyclical Rectal Bleeding

Another overlooked sign of endometriosis is pain during bowel movements, known as dyschezia [11]. Women often describe sharp or cramping pain when passing stool, which may worsen in the days before and during menstruation. In some cases, there may also be rectal bleeding that appears predictably with the menstrual cycle [12]. Because these symptoms resemble haemorrhoids, irritable bowel syndrome or inflammatory bowel disease, they are frequently misdiagnosed, leading to delays in recognising the true cause.

These complaints usually arise when endometriosis involves the rectum, sigmoid colon or rectovaginal septum. Lesions in these areas bleed and trigger inflammation with each cycle, making defecation painful. Over time, scarring and adhesions can narrow the bowel or tether it to surrounding structures, further intensifying symptoms. Unlike functional bowel disorders, the pain is often cyclical and linked closely to menstruation, providing an important diagnostic clue.

Cyclical bowel pain or rectal bleeding should never be dismissed as routine digestive trouble. When these symptoms persist, especially in combination with pelvic pain, heavy bleeding or other signs of endometriosis, they warrant further evaluation by a gynaecologist familiar with deep infiltrating disease.

Endometriosis: When Subtle Symptoms Warrant Medical Attention

Recognising endometriosis is not always straightforward, but patterns in symptoms can be revealing. If bowel or urinary changes, pelvic pain or persistent fatigue consistently worsen around menstruation, this cyclical link should raise concern beyond routine period discomfort. Keeping a detailed symptom diary—tracking pain severity, bleeding patterns and associated complaints—can help both women and clinicians identify these patterns earlier.

Seeking medical advice without delay is essential. Even when routine scans appear normal, endometriosis may still be present, as superficial and deep lesions are often missed on standard imaging. Referral to a gynaecologist with expertise in endometriosis is the most effective next step. In some cases, collaboration with specialists in gastroenterology, urology or pain management may also be necessary.

Taking subtle but persistent symptoms seriously does more than bring clarity; it shortens the path to diagnosis, avoids unnecessary treatments and allows access to therapies that can protect fertility, reduce complications and improve day-to-day quality of life.

Conclusion

Endometriosis continues to be one of the most underdiagnosed conditions in women’s health, not because it is rare, but because its symptoms so often imitate other disorders. Digestive flares mistaken for irritable bowel syndrome, urinary complaints treated as recurrent infections, fatigue dismissed as stress, or rectal pain attributed to haemorrhoids are just some of the ways the condition hides in plain sight. Yet across these varied presentations, one feature is consistent: the tendency for symptoms to worsen in rhythm with the menstrual cycle.

Recognising that pattern is more than a matter of awareness; it is the starting point for timely diagnosis and treatment. Each year of delay not only prolongs pain but can allow the disease to advance, increasing the risk of adhesions, complex surgery and impaired fertility. By paying closer attention to these subtle signs, women and clinicians alike can shorten the path to answers and open the door to more effective management.

If you are experiencing persistent symptoms that align with your cycle, it is important to seek specialist advice. Schedule a consultation with Dr. Ma Li’s clinic for a comprehensive evaluation and a treatment plan tailored to your needs. Early intervention can change the course of the disease and restore quality of life.

References 

1. Endometriosis. 24th March 2023. Retrieved September 26, 2025, from https://www.who.int/news-room/fact-sheets/detail/endometriosis 
2. De Corte, P., Klinghardt, M., von Stockum, S., & Heinemann, K. (2025). Time to diagnose endometriosis: Current status, challenges and regional characteristics—a systematic literature review. Bjog, 132(2), 118–130. https://doi.org/10.1111/1471-0528.17973 
3. Habib, N., Centini, G., Lazzeri, L., Amoruso, N., El Khoury, L., Zupi, E., & Afors, K. (2020). Bowel endometriosis: Current perspectives on diagnosis and treatment. International Journal of Women’s Health, 12, 35–47. https://doi.org/10.2147/IJWH.S190326 
4. Leonardi, M., Espada, M., Kho, R. M., Magrina, J. F., Millischer, A.-E., Savelli, L., & Condous, G. (2020). Endometriosis and the urinary tract: From diagnosis to surgical treatment. Diagnostics, 10(10), 771. https://doi.org/10.3390/diagnostics10100771 
5. Pietrzak, K., Szablewska, A. W., Pryba, B., & Gaworska-Krzemińska, A. (2025). From first breathless episode to final diagnosis and treatment: A case report on thoracic endometriosis syndrome. Journal of Clinical Medicine, 14(17), 6240. https://doi.org/10.3390/jcm14176240  
6. Bindra, V., Nori, M., Reddy, R., Reddy, R., Satpathy, G., & Reddy, C. A. (2023). Sciatic nerve endometriosis – The correct approach matters: A case report. Case Reports in Women’s Health, 38, e00515. https://doi.org/10.1016/j.crwh.2023.e00515 
7. Ferrero, S., Camerini, G., Leone Roberti Maggiore, U., Venturini, P. L., Biscaldi, E., & Remorgida, V. (2011). Bowel endometriosis: Recent insights and unsolved problems. World Journal of Gastrointestinal Surgery, 3(3), 31–38. https://doi.org/10.4240/wjgs.v3.i3.31 
8. Ek, M., Roth, B., Bengtsson, M., & Ohlsson, B. (2021). Gastrointestinal symptoms in women with endometriosis and microscopic colitis in comparison to irritable bowel syndrome: A cross-sectional study. The Turkish Journal of Gastroenterology, 32(10), 819–827. https://doi.org/10.5152/tjg.2020.19583 
9. Takeuchi, M., Matsuzaki, K., & Harada, M. (2024). Endometriosis, a common but enigmatic disease with many faces: Current concept of pathophysiology, and diagnostic strategy. Japanese Journal of Radiology, 42(8), 801–819. https://doi.org/10.1007/s11604-024-01569-5 
10. Endometriosis and pain during sex(Dyspareunia). (2020, June 10). https://drseckin.com/painful-sex-and-endometriosis/ 
11. Fleming, A., & Hardy, A. (2025). Endometriosis is more than a painful period. Period. The Journal for Nurse Practitioners, 21(1), 105232. https://doi.org/10.1016/j.nurpra.2024.105232 
12. Keith, J. J., Hernandez, L. O., Maruoka Nishi, L. Y., Jethwa, T. P., Lewis, J. T., & Pujalte, G. G. A. (2020). Catamenial rectal bleeding due to invasive endometriosis: A case report. Journal of Medical Case Reports, 14, 61. https://doi.org/10.1186/s13256-020-02386-w 

Endometriosis is a chronic condition that affects reproductive-age females, where tissue similar to the lining of the uterus grows outside the uterus. It affects approximately one in ten women in their childbearing years and is a prevalent condition both globally and in Singapore [1]. 

Symptoms of endometriosis commonly include painful periods, heavy menstrual bleeding, pelvic pain, and in some cases, infertility. This condition can significantly reduce quality of life, causing not only pain but also fatigue, anxiety, and depression. For some women, the pain can interfere with daily activities, making it difficult to attend work or school. Pain during sex can also disrupt intimacy, affecting both individuals and their partners. 

Endometriosis is a systemic condition that can affect not only the uterus but also the ovaries, vagina, rectum, and other pelvic organs. Early treatment is essential to improve both overall health and reproductive outcomes for women living with the condition. With appropriate medical care,  including medication, lifestyle adjustments, or surgical treatments, many women experience significant relief from symptoms and enjoy an improved quality of life.

Keep reading to find out more about endometriosis and treatment options in Asia.

Understanding Endometriosis

What is Endometriosis?

Endometriosis is an inflammatory condition where tissue similar to the lining of the uterus (endometrium) grows outside the uterus. These growths are often found on the ovaries, fallopian tubes, bladder, intestines, and other pelvic organs. When they respond to hormonal changes during the menstrual cycle, they often cause inflammation, pain, and scarring over time. 

Endometriosis can also damage the fallopian tubes, interfere with embryo implantation, reduce egg quality, and diminish ovarian reserve, ultimately affecting fertility. 

What Causes Endometriosis?

The exact cause of endometriosis remains unknown, but some theories [2] include:

• Retrograde menstruation: Occurs when menstrual blood flows backward through the fallopian tubes into the pelvic cavity, carrying endometrial cells. These cells can attach to the pelvic walls and organs, where they grow and thicken with each menstrual cycle.
• Transformed peritoneal cells: Research suggests that hormones or immune factors may cause peritoneal cells, which line the inner abdomen, to transform into cells resembling those that line the uterus.
• Embryonic cell changes: Hormones such as estrogen may trigger embryonic cells to transform into endometrial-like tissue, contributing to growths during puberty.
• Complications from surgery: Endometrial cells can attach to scar tissue formed after abdominal surgeries, such as a cesarean, leading to endometriosis.
• Endometrial cell transport: Blood vessels or the tissue fluid system may transport endometrial cells to other areas of the body, causing them to implant and grow in locations outside the uterus.
• Immune system dysfunction: Immune system issues may cause endometrial-like tissue to implant and grow.

Several risk factors of endometriosis make some women more prone to developing the condition. These include:

• Never giving birth
• Starting menstruation at an early age
• Entering menopause at a later age
• Short menstrual cycles (less than 27 days)
• Heavy periods lasting more than seven days
• Higher estrogen levels or prolonged estrogen exposure
• Low body mass index (BMI)
• A family history of endometriosis 

Common Symptoms of Endometriosis 

Endometriosis symptoms vary among individuals, and the severity of symptoms does not always correlate [3] with the extent of the disease. Some women with severe endometriosis may have mild symptoms, and vice versa. Some people with endometriosis do not experience symptoms. For those that they do, they often include:

• Chronic pelvic pain, especially before and during menstruation.
• Dysmenorrhea (painful, often debilitating periods).
• Dyspareunia (experiencing pain during or after intercourse).
• Infertility
• Pain and discomfort during bowel movements, bloating, or urinary issues when menstruating. 
• Fatigue, diarrhea, constipation, bloating, or nausea before or during menstruation. 
• Heavy or abnormal bleeding between periods. 

Diagnosis Methods in Asia

Diagnosing endometriosis can be challenging and often delayed due to normalisation of menstrual pain and lack of awareness. In Asia, common diagnostic methods include:

• Clinical history: Taking notes of the patient’s symptoms and medical history. 
• Pelvic examination: To detect cysts or tenderness.
• Imaging techniques:

• Ultrasound (transvaginal or abdominal): Used for identifying ovarian endometriomas.
• MRI Scans: Used for visualising deep infiltrating endometriosis.
• Laparoscopy (minimally invasive surgery): A common diagnostic method that allows direct visualisation and biopsy of growths and lesions.
  

Non-Surgical Treatment Options for Endometriosis in Asia

Many women with endometriosis seek non-surgical treatments to alleviate symptoms, improve quality of life, and preserve fertility. In Asia, a range of non-surgical treatment options are available, including medication, alternative therapies, and lifestyle adjustments. These treatments offer personalised approaches to managing the condition, depending on the severity of symptoms and individual preferences. Here are some common non-surgical treatment options: 

• Oral contraceptives

Oral contraceptives, including birth control pills and hormonal treatments, are commonly used to regulate menstrual cycles, reduce pain, and suppress the growth of endometrial tissue. These treatments help control symptoms, especially in mild cases.

• Pain relief

Non-prescription pain relievers such as NSAIDs are often used to manage pelvic pain and menstrual cramps, offering short-term relief from symptoms. 

• Diet and lifestyle changes 

Anti-inflammatory diets [4], which are rich in omega-3 fatty acids, fruits, and vegetables, may help reduce inflammation and pain. Exercise and stress management techniques, such as yoga or meditation, can also aid in symptom management.

These approaches primarily manage symptoms rather than cure the condition, as there are limitations to non-surgical treatments. For example, hormonal treatments may not be suitable for women trying to conceive or those who experience side effects. 

If symptoms persist despite non-surgical treatments, or if there are concerns about fertility, surgical options such as laparoscopy and robotic gynaecological surgery may be necessary to remove severe endometrial growths.

Surgical Treatment Options for Endometriosis in Asia

For women with severe endometriosis or those unresponsive to non-surgical treatments, surgery is often required to remove endometrial tissue, alleviate pain, and preserve fertility. In Asia, surgical options like laparoscopy and robotic gynaecological surgery offer solutions with varying benefits depending on the severity of the condition and the patient’s goals. 

Types of Surgery for Endometriosis: 

• Laparoscopy (Minimally Invasive Surgery): Laparoscopy involves small incisions through which a camera and surgical tools are inserted to remove or destroy endometrial tissue. This procedure is less invasive, allows for faster recovery, and is often used for both diagnosis and treatment.
  
• Hysterectomy: This involves the removal of the uterus, and in some cases, the ovaries. It is typically considered for women who no longer wish to have children and have not found relief through other treatments. While effective in reducing symptoms, a hysterectomy may not cure endometriosis completely.
  
• Robotic gynaecological surgery: Robotic gynaecological surgery is a minimally invasive surgery [5] that involves using robotic arms controlled by the surgeon for precision. This method allows surgeons to remove endometrial tissue while minimising damage to surrounding organs. One of the primary goals of this surgery is to preserve fertility. The precision of the robotic system allows surgeons to carefully remove endometrial growths while sparing healthy tissue, improving the chances of natural conception or assisted reproductive techniques.

How to Choose the Right Gynaecologic Surgeon for Endometriosis Treatment in Asia

Choosing the right gynaecologic surgeon for endometriosis treatment is essential for achieving the best outcomes. When selecting a surgeon, it's important to consider the severity of your symptoms, fertility goals, and access to high-quality care. If robotic gynaecological surgery is the recommended treatment, it’s ideal to choose a surgeon with experience and expertise in the field. 

A skilled surgeon usually takes a holistic approach, tailoring treatment plans to meet your individual needs and goals. Key factors to consider before surgery include whether preserving fertility is a priority and ensuring the surgeon is accessible for ongoing support and follow-up. It's also important to ask your doctor about their success rates, potential risks, recovery times, and long-term outcomes for patients with similar cases. 

Dr. Ma Li is an internationally recognised endometriosis specialist and minimally invasive gynaecological surgeon based in Singapore, specialising in robotic gynaecological surgery for endometriosis. With a focus on fertility-preserving treatments, Dr. Ma Li offers comprehensive care to help manage the condition. Learn more about Dr. Ma Li’s approach and book a consultation at Dr. Ma Li Clinic.

How much does Endometriosis Treatment Cost?

In Singapore, the cost of endometriosis treatment depends on factors such as the severity of the condition, the type of treatment, and the chosen clinic. For example, laparoscopic surgery typically costs between SGD 25,000 and SGD 35,000, with variations depending on the complexity and fees. Robotic gynaecological surgery tends to be more expensive due to the specialised technology and expertise involved.

Patients in Singapore may use MediSave to help cover some surgical costs. There may also be private insurance coverage, depending on your insurer and plan. When evaluating the cost of treatment, it’s also important to consider the long-term benefits, such as improved quality of life and the potential for fertility preservation.

What to Expect After Endometriosis Treatment

After treatment, particularly surgery, many women experience significant relief from pain, reduced menstrual cramps, and less discomfort during intercourse. This leads to less dependence on pain medications and an improved quality of life. Minimally invasive surgeries such as robotic gynaecological surgery offer faster recovery and quick healing, allowing patients to return to their normal activities as soon as possible. 

As endometriosis is a long-term condition, follow-up appointments are essential to monitor progress, manage symptoms, and ensure long-term health and fertility goals are met. Regular check-ups are important to detect recurrence of endometrial tissue and adjust treatment plans as required. 

Conclusion

For those with severe symptoms or who wish to conceive, endometriosis treatment is essential for pain relief, preserving fertility, and improving overall quality of life. Those who suffer from this condition should be aware that there are various treatment options available, such as robotic gynaecological surgery. By effectively removing endometrial tissue, these treatment options provide significant pain relief and can help preserve fertility.

If you're experiencing symptoms of endometriosis, seeking treatment as soon as possible is crucial. Early intervention can help manage the condition while significantly reducing debilitating symptoms and improving quality of life. 

Frequently Asked Questions 

Can endometriosis be permanently treated?

While there's no cure for endometriosis, the symptoms can be significantly reduced through various treatments, including medication and surgery. 

Is endometriosis a serious problem?

Endometriosis is a chronic condition that causes tissue similar to the uterine lining to grow outside the uterus. This tissue can form adhesions and cysts, and can also damage organs. Left untreated, it can cause serious complications. 

Can endometriosis be cancerous?

Although they may sound similar, endometriosis and endometrial cancer are very different conditions. Endometriosis is not cancer, and having endometriosis does not necessarily lead to endometrial cancer. 

Can endometriosis cause weight gain?

Yes, people with endometriosis may gain weight from fluid retention. Hormonal fluctuations and medication side effects may also contribute to weight gain. Speak to your doctor if you are experiencing symptoms such as weight gain. 

References

1. Chong, C. (2022, March 2). Menstrual pain could be endometriosis; affects 1 in 10 females in child-bearing years in S'pore. The Straits Times. Retrieved from: https://www.straitstimes.com/singapore/menstrual-pain-could-be-endometriosis-affects-1-in-10-women-in-child-bearing-years-here
2. Mayo Clinic. (n.d.). Endometriosis - Symptoms and causes. Mayo Clinic. Retrieved from: https://www.mayoclinic.org/diseases-conditions/endometriosis/symptoms-causes/syc-20354656
3. BMC Medicine (2023). Shining a light on endometriosis: time to listen and take action. BMC medicine, 21(1), 107. Retrieved from: https://doi.org/10.1186/s12916-023-02820-y
4. Harvard Health Publishing. (2024, March 26). Foods that fight inflammation. Harvard Health. Retrieved from: https://www.health.harvard.edu/staying-healthy/foods-that-fight-inflammation
5. Ferreira, H., Ferreira, J. C., & Fernandes, R. C. (2023). Impact of surgical experience on outcomes of robotic gynecologic surgery: A retrospective study. Revista da Associação Médica Brasileira, 69(10), 1443–1448. Retrieved from: https://www.scielo.br/j/ramb/a/XYdLnbxPMG8nNPR5XRV3hMs/

Introduction

Ovarian cysts are fluid-filled sacs that form on or within the ovaries. There are several types of ovarian cysts, and while they are usually harmless, they can sometimes lead to complications that affect a woman’s health and fertility. 

Reproductive health plays a vital role in Singapore, particularly in light of the country’s declining birth rate [1]. Early detection and management of ovarian cysts can help women who are planning to conceive prevent complications and protect their fertility. It is also important to understand the symptoms of ovarian cysts in case of a rupture or other side effects that may affect health and well-being.  

Keep reading to learn more about ovarian cysts, including their causes, symptoms, diagnosis, treatment options, and how they relate to fertility. 

What are Ovarian Cysts?

Ovarian cysts are fluid-filled sacs that form on or inside the ovaries. They are common among women of all ages and are often harmless, typically resolving on their own without the need for medical intervention. However, some cysts may cause symptoms or complications, particularly if they grow larger or rupture.

The size of an ovarian cyst [2] is an important factor in determining its impact. Smaller cysts are typically asymptomatic and less likely to cause problems, while larger cysts may increase the risk of pain or complications such as torsion or rupture.

Understanding the type and size of a cyst is important for effective management and ensuring it does not affect fertility and reproductive health.

Types of Ovarian Cysts

Functional Cysts: These are the most common type and are linked to the menstrual cycle. They include:

• Follicular cysts: Often forming when the follicle fails to release an egg.
• Corpus luteum cysts: These develop after the egg is released.

Pathological Cysts: These are less common and may require medical attention. They include:

• Dermoid cysts: Made up of various tissues such as hair or skin and are also known as teratomas.
• Cystadenomas: Usually grow on the ovarian surface and contain a watery substance.
• Endometriomas: Cysts are associated with endometriosis when tissues similar to the uterine lining grow outside the uterus and attach to the ovary​.

Why do Ovarian Cysts develop?  

Ovarian cysts can develop due to various reasons, including:

• Hormonal imbalances: Disruptions in hormone levels can lead to the formation of functional cysts.
• Menopause: Postmenopausal women can be at risk of cysts that are more likely to be malignant. 
• Underlying conditions:
  • Polycystic Ovary Syndrome (PCOS): A hormonal condition that affects women of reproductive age, often causing multiple small cysts in the ovaries and infertility.
  • Endometriosis:  A condition where tissue and cells similar to the uterus lining grow outside the uterus, sometimes leading to the development of endometriomas.
• Other factors:
  • Genetic predisposition: Having a family history of hormonal imbalances or ovarian cysts. 
  • Pregnancy: Corpus luteum cysts [3] can form in early pregnancy.
  • Pelvic infections that spread to the ovaries.
  • Fertility treatments: Those that stimulate ovulation, such as clomiphene (Clomid) [4], may increase the risk of ovarian cysts.
  • History of ovarian cysts: Those who have had ovarian cysts in the past are more likely to develop them again. 

How do you know if you have Ovarian Cysts?

Ovarian cysts are usually asymptomatic and go unnoticed. However, when symptoms occur, they may include:

• Sharp or sudden pelvic pain
• Abdominal bloating or a sense of fullness in the stomach
• Irregular or missed periods
• Heavy bleeding and pain during periods
• Pain during sexual intercourse
• Frequent urination or discomfort with bowel movements 

If symptoms suggest the presence of an ovarian cyst, your doctor may use the following methods to confirm the diagnosis: 

Pelvic Exam

During a routine pelvic exam, your doctor or gynaecologist may suspect the presence of an ovarian cyst. The doctor will check for any lumps or changes in the ovaries that may indicate a cyst.

Imaging Tests

To confirm the presence and characteristics of an ovarian cyst, imaging techniques are usually used, including:

• Pelvic Ultrasound: The most common and effective method for diagnosing ovarian cysts, a transvaginal ultrasound provides clear images of the ovaries. A small probe is inserted into the vagina, allowing the doctor to assess the cyst’s size, location, and whether it’s fluid-filled or solid.
• CT Scan or MRI: These imaging tests may be recommended when more detailed images are needed, particularly for complex cysts.

Blood Tests

If an ovarian cyst is confirmed through ultrasound, blood tests may be ordered for further evaluation:

• Pregnancy Test: Since ovarian cysts are common during pregnancy, a pregnancy test can help rule it out as the cause of symptoms.
• CA 125 Test: This blood test measures the level of cancer antigen 125, a protein that can be elevated in ovarian cancer. However, elevated CA 125 levels can also occur in non-cancerous conditions like endometriosis or pelvic infections. This test is usually recommended for postmenopausal women or if the cyst seems suspicious.

Do Ovarian Cysts need to be removed? 

Whether an ovarian cyst requires surgical removal depends on its size, type, symptoms, and potential risks. Many ovarian cysts, particularly functional ones, are harmless and often resolve within a few menstrual cycles. Small functional cysts usually disappear without intervention and are frequently monitored through regular ultrasound scans. If a cyst does not cause pain, discomfort, or interfere with daily life, your gynaecologist may opt for a monitoring approach.

However, some cysts may need surgical removal under specific circumstances. These include: 

• Persistent or growing cysts: If a cyst does not resolve or continues to enlarge, your gynaecologist may advise removal to eliminate complications.
• Painful or symptomatic cysts: Cysts causing pelvic pain, bloating, or irregular periods may require intervention.
• Complex or pathological cysts: Dermoid cysts, cystadenomas, or endometriomas may need to be removed to prevent complications or assess for malignancy.
• Cysts with suspected malignancy: Large cysts, especially in postmenopausal women, may be surgically removed for further evaluation to rule out ovarian cancer.
• Complications: If a cyst ruptures, causes ovarian torsion, or results in severe pain, immediate medical attention and surgical intervention may be necessary.

Surgical approaches for ovarian cysts include:

• Laparoscopy: A minimally invasive procedure ideal for smaller or uncomplicated cysts.
• Laparotomy: Open surgery for larger or more complex cysts.

How are Ovarian Cysts treated without surgery?

Ovarian cysts can be managed and treated in several ways without surgery. These include: 

• Hormonal therapy, such as birth control pills, may be prescribed to prevent the formation of new cysts.
• Pain management, lifestyle adjustments, and monitoring through regular check-ups.

Consulting a gynaecologist is essential to determine the best course of action based on your circumstances. Early detection and management can prevent complications and protect reproductive health.

What does a ruptured Ovarian Cyst feel like?

A ruptured cyst is a medical emergency. If you experience these symptoms, seek immediate medical assistance. A ruptured ovarian cyst usually causes:

• Sudden and severe abdominal or pelvic pain.
• Nausea or vomiting.
• Light-headedness or fainting.
• Heavy vaginal bleeding.

Do Ovarian Cysts cause infertility?

While many ovarian cysts do not impact or directly cause infertility, certain types [5] can make it more difficult for women to get pregnant. However, for most women, timely treatment and fertility-focused care can help preserve or restore fertility. Here are some ways that ovarian cysts can lead to fertility issues: 

• PCOS: Causes hormonal imbalances and irregular ovulation, which can lead to infertility.
• Endometriomas: Linked to reduced ovarian reserve and implantation issues.
• Surgical considerations: Repeated surgeries to remove cysts may damage ovarian tissue and reduce egg supply.

Can you prevent Ovarian Cysts from developing?

While not all ovarian cysts are preventable, you can take steps to reduce your risk, especially if you already have risk factors such as hormonal imbalances or a family history of ovarian cysts. These include:

• Maintaining a healthy lifestyle: Following a healthy and balanced diet, exercising regularly, and managing stress effectively can boost your health and prevent ovarian cysts from developing.
• Regular gynaecological check-ups: Early detection through routine screenings is essential, so make it a point to schedule regular appointments with your gynaecologist. 
• Taking hormonal birth control: Your gynaecologist may prescribe birth control medication to regulate ovulation and prevent cysts.
• Paying attention to your menstrual cycle: Keep aware of menstrual irregularities or unusual recurring symptoms to stay aware of your current reproductive health.  

Conclusion

Ovarian cysts are a common aspect of women's reproductive health that are usually harmless but can occasionally lead to serious complications. It is important to take note of any unusual symptoms and seek gynaecological care regularly. Early detection and timely treatment can help manage cysts, alleviate symptoms, and reduce their impact on fertility.

If you have concerns about ovarian cysts or fertility, consult Dr Ma Li in Singapore for guidance and personalised treatment. Specialising in advanced gynaecological surgery, early intervention, and the long-term management of gynaecological conditions, she is dedicated to healing and empowering women through comprehensive care and support. Contact us today to book a consultation. 

Frequently Asked Questions

What does ovarian cyst pain feel like?

If an ovarian cyst causes symptoms, you may experience pressure, bloating, swelling, or pain in the lower abdomen on the side where the cyst is located. The pain can vary in intensity, from sharp to dull, and may come and go. If a cyst ruptures, it can cause sudden and intense pain that requires immediate medical attention.

Do ovarian cysts go away?

Many functional ovarian cysts don’t require treatment and typically resolve on their own within 8 to 12 weeks. If you have recurrent cysts, your doctor may recommend birth control pills (oral contraceptives) to reduce the risk of developing new cysts in the future.

Can a cyst come out during your period?

A cyst can rupture or burst during your period, which can result in sudden, sharp pain and vaginal bleeding. If you experience severe pain and abnormal bleeding during your period, it’s important to seek medical attention right away.

Do ovarian cysts become cancerous? 

Many ovarian cysts typically disappear without causing symptoms, requiring little to no treatment. While it’s uncommon, some ovarian cysts can become cancerous. Regular check-ups and monitoring are essential for early detection and proper management.

References

1. Kearney. (2023, December 1). Solving Southeast Asia’s looming fertility crisis: IVF as a path toward hope. Retrieved from: https://www.kearney.com/industry/health/article/solving-southeast-asia-s-looming-fertility-crisis-ivf-as-a-path-toward-hope
2. Healthline. (2023, November 27). What Size Is Normal for an Ovarian Cyst? Retrieved from: https://www.healthline.com/health/ovarian-cyst-size
3. Cleveland Clinic. (2023, December 5). Corpus luteum cyst. Retrieved from: https://my.clevelandclinic.org/health/diseases/22340-corpus-luteum-cyst
4. WebMD. (n.d.). Clomid oral details. Retrieved from https://www.webmd.com/drugs/2/drug-11204/clomid-oral/details
5. Mayo Clinic. (2023, August 3). Ovarian cysts and infertility.  Retrieved from: https://www.mayoclinic.org/diseases-conditions/ovarian-cysts/expert-answers/ovarian-cysts-and-infertility/faq-20057806