Silent Endometriosis & Fertility Implications

What is Silent Endometriosis?

Silent endometriosis is a form of endometriosis that occurs without noticeable symptoms.

Unlike typical endometriosis, silent endometriosis does not cause severe pain, making it harder to diagnose. It often goes unnoticed until a woman faces fertility issues or undergoes surgery for another reason. Despite the lack of symptoms, it can still cause internal inflammation, scar tissue, and organ damage over time.

Regular gynecological check-ups and imaging tests are key to early detection. Silent endometriosis can affect reproductive health even without obvious warning signs. Early diagnosis improves treatment outcomes and supports long-term fertility.

What causes silent endometriosis, and why is early diagnosis crucial?

Researchers think that about 20-25% of endometriosis cases are asymptomatic. The exact reason for this is not clear. In silent endometriosis, the disease goes unnoticed for many years and typically presents when a woman tries to get pregnant. These women often have difficulty conceiving and require assisted reproductive techniques (ARTs) such as in vitro fertilization (IVF). For some women by the time they present, even these techniques will no longer be successful.

Aside from fertility, endometriosis is a progressive disease. If it is not recognized early, some women will present with damage to surrounding organs. These can include the pelvic structures, such as fallopian tubes, or even the bowel and bladder. There are cases where it can invade and/or damage the ureter (the tube that connects the kidney to the bladder), and it is a rare cause of permanent damage to a patient’s kidney.

What are the symptoms of silent endometriosis?

Silent endometriosis often has no clear symptoms, making it difficult to detect without medical evaluation.

Some women may experience mild bloating, fatigue, or irregular periods, but these signs are often overlooked. Unlike typical endometriosis, there’s usually no severe pelvic pain or cramping. In many cases, silent endometriosis is discovered during infertility investigations or unrelated surgeries.

Subtle signs like digestive discomfort, low back pain, or spotting between periods can also appear. Because symptoms are vague or absent, many women remain unaware of the condition. Regular pelvic exams and imaging can help catch it early. Early detection supports better treatment outcomes and fertility preservation.

Can you have endometriosis without knowing?

Yes, you can have endometriosis without knowing. Many people experience minimal or no symptoms, so the condition may go unnoticed for years. Mild pelvic discomfort, irregular periods, or subtle digestive changes can occur, but these are often mistaken for normal menstrual or gastrointestinal issues. Even without noticeable pain, endometriosis can affect fertility or cause complications over time.

Diagnosis often happens during routine gynecological exams, fertility evaluations, or surgeries for unrelated problems. Because symptoms can be absent or very mild, regular check-ups are important for early detection and management.

How rare is silent endometriosis?

Silent endometriosis is relatively common but often underdiagnosed due to the absence of typical symptoms.

Studies suggest that many women with endometriosis experience no noticeable pain, delaying diagnosis for years. Silent cases are often found during fertility treatments or surgeries for other conditions. Though not rare, they remain hidden because routine symptoms like cramps or pelvic pain are minimal or absent.

Experts estimate a significant portion of undiagnosed infertility may be linked to silent endometriosis. Because it’s easily overlooked, awareness and regular check-ups are crucial. Early identification can prevent long-term reproductive complications and improve quality of life.

Can endometriosis be invisible?

Yes, endometriosis can be invisible. The lesions may be very small or located in areas that do not cause noticeable symptoms. Some people may have endometrial tissue growing on organs or deep in the pelvic cavity without any pain or obvious signs. Because it doesn’t always show in imaging tests or cause clear symptoms, the condition can remain undetected for years.

Sometimes it is only discovered during surgery for another issue, such as infertility or pelvic pain. Its “invisible” nature makes awareness and careful medical evaluation important for proper diagnosis.

What is unexplained infertility?

Infertility is the inability to conceive even after one year of unprotected intercourse. Doctors evaluate the reasons for infertility on several parameters, including assessment of the semen, ovulation, health of the fallopian tubes, and the ovarian reserve. However, in approximately 15-30% of cases, everything seems normal on standard evaluation, but fertility remains elusive. This is called unexplained infertility.

How are endometriosis and unexplained infertility related?

Endometriosis results in an altered state of immunity and inflammation that can make it difficult for the embryo to survive. Therefore, recurrent early miscarriages can also be an indication of silent endometriosis.

Moreover, endometriosis in the ovaries, known as ovarian endometrioma or chocolate cysts, can adversely affect ovarian reserve and egg quality. Research has shown that IVF with eggs taken from women with endometriosis is more likely to fail than with eggs used from women with other causes of infertility.

Finally, endometriosis lesions may damage the fallopian tubes to the point that they are no longer about to function. When this happens, the egg will be unable to travel to the uterus, or worse, may fertilize in the wrong location, leading to an ectopic pregnancy.

How can doctors diagnose unexplained infertility due to silent endometriosis?

Laparoscopy deep excision surgery, followed by histological evaluation of a biopsy sample, is the only way to confirm the presence of endometriosis. The following tools can be used to help facilitate diagnosis.

• CA-125 (Cancer antigen 125) as a marker for abdominal inflammation. This is commonly elevated with endometriomas, aka “chocolate cysts”
• BCL-6 testing, a biopsy of the uterine lining that can be a predictor of chronic inflammation and/or endometriosis
• More sensitive imaging, such as a pelvic MRI or targeted sonogram performed by a knowledgeable radiologist

These tests must be evaluated in the appropriate clinical context and should not be used without physician guidance.

How do we treat silent endometriosis?

Laparoscopic deep excision surgery performed by a skilled surgeon is the gold standard to completely remove endometriosis lesions. Our patented Aqua Blue Contrast (TM) technique maximizes the proper identification and complete excision of endometriosis lesions.

If endometriosis affects the ovary, the surgeons at the Seckin Endometriosis Center (SEC) will reconstruct the organ in order to preserve the maximum number of healthy follicles.

Have you been suffering from silent endometriosis? Please share your story by leaving a comment on our post on Facebook or Instagram if you wish to.