Endometrial Cancer Screening: How It Works, Results and What to Expect

Endometrial cancer screening is not recommended routinely for people at average risk because there is no proven screening test that reduces deaths from this cancer. Instead, early detection depends largely on recognising unusual vaginal bleeding and arranging timely assessment, which may include transvaginal ultrasound and an endometrial biopsy.

Overview: what endometrial cancer screening means

Endometrial cancer screening refers to testing for cancer of the endometrium, the lining of the uterus, before symptoms develop. Unlike cervical cancer screening, there is currently no routine test recommended for all people at average risk of endometrial cancer. Tests such as ultrasound and endometrial biopsy are mainly used to investigate symptoms or to monitor selected people with a substantially increased inherited risk.

The most useful approach to early detection is knowing which symptoms deserve attention and seeking assessment without delay. This is particularly important after menopause, when any vaginal bleeding should be checked. Many causes of abnormal bleeding are benign, but only an examination and appropriate tests can identify the cause.

Endometrial cancer is different from cancer of the cervix and from ovarian cancer. It often causes symptoms at an earlier stage, which is one reason prompt evaluation of unusual bleeding can support earlier diagnosis. More information about the condition is available in endometrial cancer.

Who may need testing and why

People with abnormal uterine bleeding may need testing for endometrial cancer or other uterine conditions. Abnormal bleeding can include bleeding after menopause, bleeding between periods, periods that become much heavier or more irregular than usual, or persistent watery, pink, or blood-stained vaginal discharge after menopause.

Testing may also be considered at a lower threshold for people with factors associated with a higher likelihood of endometrial cancer. These include older age, obesity, polycystic ovary syndrome, diabetes, prolonged exposure to oestrogen without adequate progesterone, use of tamoxifen, and a personal history of certain hormone-related cancers. Risk factors do not mean that cancer is present, and many people diagnosed with endometrial cancer have no clear risk factor.

People with Lynch syndrome, an inherited condition that increases the risk of several cancers, should discuss individual surveillance and prevention options with a clinician experienced in hereditary cancer. In this setting, planned biopsies may sometimes be considered, but their benefit as a screening strategy is less certain than preventive surgery once childbearing is complete.

How endometrial cancer screening tests work

Assessment begins with a medical history and pelvic examination. The clinician will ask about bleeding patterns, menopause status, medicines, pregnancies, family history, and medical conditions. A pregnancy test may be appropriate for people who could be pregnant, since pregnancy-related causes of bleeding need urgent consideration.

Transvaginal ultrasound uses a slender ultrasound probe placed in the vagina to produce images of the uterus and ovaries. It can measure the thickness and appearance of the endometrium. In postmenopausal bleeding, a thin endometrial lining on ultrasound can be reassuring in many cases, while a thickened or irregular lining may indicate the need for tissue sampling. Ultrasound alone does not diagnose cancer.

An endometrial biopsy removes a small sample of tissue from the uterine lining for laboratory examination. It is a key diagnostic test because a pathologist can look directly for precancerous changes, known as endometrial intraepithelial neoplasia or atypical hyperplasia, and cancer cells. If the sample is insufficient, symptoms persist, or a focal abnormality such as a polyp is suspected, hysteroscopy may be recommended. During hysteroscopy, a thin camera is passed through the cervix to view the uterine cavity and guide a biopsy or removal of a polyp.

What to expect during an endometrial biopsy and recovery

An endometrial biopsy is usually performed in a clinic. The person lies on an examination couch as for a cervical screening test. A speculum is placed in the vagina so the cervix can be seen, and a narrow flexible tube is gently passed through the cervix into the uterus to collect a small tissue sample. The sampling part generally takes only a short time.

Some people experience cramping similar to period pain, pressure, or brief sharp discomfort during the procedure. The clinician may advise an appropriate over-the-counter pain reliever beforehand if it is safe for the individual, but this should be discussed in advance, especially for people taking anticoagulants or with kidney, stomach, or allergy concerns. In some circumstances, a biopsy is performed with additional pain relief, sedation, or anaesthesia.

Light spotting and mild cramps can occur for one or two days afterward. Most people return to usual daily activities on the same day, although taking it easy may feel more comfortable. The care team will provide individual advice about intercourse, tampons, bathing, and medication use. Heavy bleeding, severe or worsening pain, fever, foul-smelling discharge, dizziness, or feeling unwell should be reported promptly.

The main benefit of biopsy is that it can provide a direct tissue diagnosis and guide next steps. Risks are uncommon but include pain, bleeding, infection, fainting, and, rarely, injury to the uterus. A biopsy can also occasionally miss a focal abnormality or yield too little tissue, which is why persistent symptoms must be reassessed even after a non-cancer result.

Understanding results and the next steps

Results may show normal endometrial tissue, a benign cause of bleeding such as a polyp, hormonal changes, hyperplasia, atypical hyperplasia, or cancer. The laboratory report is interpreted alongside symptoms, ultrasound findings, and examination results. A normal or insufficient biopsy does not always end the assessment if bleeding continues or imaging remains concerning.

If cancer is found, further evaluation helps determine the cancer type, grade, and extent. Imaging tests may be used to assist treatment planning, but staging is often completed at surgery. Care is best coordinated by a gynaecologic oncology team, with input from pathology, radiology, radiation oncology, medical oncology, fertility specialists when relevant, and supportive-care professionals.

Treatment depends on the stage, tumour features, general health, and personal priorities. Surgery to remove the uterus, usually with the fallopian tubes and ovaries, is a common treatment. Lymph-node assessment, radiation therapy, chemotherapy, immunotherapy, targeted therapy, or hormone therapy may be advised in selected situations. Endometrial cancer treatment planning should be individualised after a full discussion of benefits, possible side effects, fertility implications, and follow-up needs.

What is one of the most common signs of endometrial cancer?

Abnormal vaginal bleeding is one of the most common signs of endometrial cancer. In people who have gone through menopause, even a single episode of vaginal bleeding or spotting should be assessed. Before menopause, bleeding between periods, unusually heavy periods, or a meaningful change from a person’s typical menstrual pattern may also need evaluation.

Abnormal bleeding is much more often caused by non-cancerous conditions, including polyps, fibroids, hormonal changes, infection, or medication effects. However, it is not possible to determine the cause based on symptoms alone. New, persistent, or recurrent bleeding should be discussed with a qualified clinician.

What happens if my endometrial biopsy is positive?

A positive endometrial biopsy means the tissue sample contains cancer cells or a precancerous abnormality. The clinician will explain the pathology findings, including the specific cell type and grade where available, and arrange referral to a gynaecologic oncologist or multidisciplinary cancer team. This result does not by itself define the full stage of the cancer.

Additional scans or tests may be requested to help plan care, although the final stage is frequently determined during and after surgery. The team will discuss suitable treatment options, possible effects on menopause and fertility, recovery expectations, and the value of support services. It can be helpful for the person to bring a trusted relative or friend to appointments and to write down questions in advance.

What is the gold standard for diagnosing endometrial cancer?

Pathological examination of endometrial tissue is the gold standard for diagnosing endometrial cancer. This means a pathologist examines a biopsy, hysteroscopy-guided tissue sample, dilation and curettage sample, or surgical specimen under a microscope. Imaging tests can identify changes that need investigation, but they cannot confirm cancer with the same certainty as tissue analysis.

An office endometrial biopsy is often the first tissue test because it is relatively quick and does not usually require an operating theatre. Hysteroscopy with directed biopsy may provide important additional information when an office biopsy is unsuccessful, insufficient, or inconsistent with ongoing symptoms or scan findings.

Is endometrial cancer 100% curable?

No cancer can be described as 100% curable. Outcomes for endometrial cancer vary according to the stage at diagnosis, tumour type and grade, molecular features, overall health, and response to treatment. Many cases are diagnosed at an early stage and can be treated successfully, but follow-up remains important.

People should avoid assuming the outlook from online information alone. The treating team can explain what the individual pathology and stage mean, describe the purpose of treatment, and provide realistic information about prognosis. Supportive care for physical symptoms, emotional wellbeing, sexual health, and menopause concerns is also an important part of care.

When to seek medical care

Medical advice should be sought promptly for any vaginal bleeding after menopause, even if it is light or happens only once. A clinician should also assess bleeding between periods, a major change in menstrual bleeding, persistent unusual discharge, or pelvic symptoms that do not settle. Urgent assessment is appropriate for very heavy bleeding, severe pain, fainting, or symptoms of significant illness.

There is no reliable way to prevent every case of endometrial cancer. Maintaining a weight that supports health, managing diabetes where present, staying physically active, and discussing the risks and benefits of hormone treatment with a clinician may help reduce risk for some people. These measures do not replace medical assessment when symptoms occur.

Acibadem International’s multidisciplinary specialists and JCI-accredited hospitals provide diagnosis and treatment planning for international patients with suspected or confirmed endometrial cancer.

Frequently asked questions

Is there a routine screening test for endometrial cancer?

No routine screening test is recommended for most people at average risk who do not have symptoms. Instead, clinicians advise prompt assessment of abnormal vaginal bleeding, especially bleeding after menopause. People with Lynch syndrome or another high-risk inherited condition may need personalised surveillance advice.

Does a transvaginal ultrasound diagnose endometrial cancer?

No. Transvaginal ultrasound can show the thickness and appearance of the uterine lining and help decide whether further testing is needed. A tissue sample examined by a pathologist is needed to confirm endometrial cancer.

How long do endometrial biopsy results take?

Timing varies between laboratories and healthcare systems, but results are often available within several days to a couple of weeks. The clinic should explain when and how results will be communicated. Contact the care team if symptoms worsen while waiting.

Can an endometrial biopsy miss cancer?

An endometrial biopsy is highly useful, but no test is perfect. A small sample may not capture a focal abnormality, and sometimes the sample contains too little tissue for interpretation. Persistent or recurrent bleeding may require hysteroscopy, repeat sampling, or other evaluation even when the first result is non-cancerous.

Is bleeding after menopause always endometrial cancer?

No. Postmenopausal bleeding has many possible causes, including thinning of vaginal or uterine tissues, polyps, hormone medicines, and infection. Nevertheless, it should always be assessed because it can be a sign of endometrial cancer or another condition needing treatment.

Can endometrial cancer occur before menopause?

Yes, although it is more common after menopause. Premenopausal people should speak with a clinician about persistent bleeding between periods, unusually heavy bleeding, or a significant change in their normal cycle. The need for testing depends on symptoms, age, risk factors, and clinical assessment.

References

• American Cancer Society
• American College of Obstetricians and Gynecologists
• National Cancer Institute
• World Health Organization
• European Society of Gynaecological Oncology

This article is for general information only and is not a substitute for professional medical advice. Please consult a qualified doctor about your individual situation.