The short answer
The most common sign of uterine cancer is abnormal vaginal bleeding, especially bleeding after menopause. Because this symptom often appears early, uterine cancer is frequently found at an early, treatable stage.
Abnormal vaginal bleeding is the most common sign of uterine cancer.
Any bleeding after menopause should always be checked.
Bleeding between periods or unusual discharge can also be signs.
Because bleeding appears early, uterine cancer is often found at an early stage.
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The full explanation.
The simple version
Uterine cancer starts in the endometrium. That is the lining inside the uterus. Doctors also call it endometrial cancer. Almost everyone who has it notices one thing first: abnormal vaginal bleeding. About 9 out of 10 women with uterine cancer had bleeding as a symptom. Bleeding tends to show up early. That is why this cancer is often found and treated before it spreads.
The main sign: abnormal bleeding
Abnormal vaginal bleeding is the most common sign. It can look like:
- Bleeding after menopause, even just spotting
- Bleeding between periods
- Periods that are heavier or longer than usual
- Watery discharge tinged with blood
Any bleeding after menopause should be checked. It is never a normal part of aging. Do not wait a few months to see if it stops.
Any bleeding after menopause should be checked by a doctor, even a single episode.
Why bleeding happens early
Uterine cancer grows in the tissue that sheds during a normal period. That tissue is thin. It has a rich blood supply. A tumor growing there tends to bleed early. This makes uterine cancer different from many other cancers, which often stay silent until they are advanced. It is also why doctors take bleeding after menopause so seriously. About 1 in 10 women who report this bleeding turn out to have endometrial cancer. The other 9 usually have a harmless cause, like thinning tissue or polyps. There is no way to know which group you are in without testing.
Other possible signs
Less often, uterine cancer can also cause:
- Pelvic pain or pressure
- Pain during sex
- A pelvic mass a doctor can feel, in more advanced cases
These signs are far less common than bleeding. Each one has other, more likely causes too. Bleeding remains the symptom that leads to most diagnoses.
Why catching it early matters so much
When uterine cancer is found before it spreads beyond the uterus, about 95% of women are alive five years later, according to NCI's SEER data. Once it has spread, that number drops. It is about 70% when the cancer has reached nearby lymph nodes, and about 20% once it has reached distant parts of the body. This gap is a big reason doctors want you to report bleeding right away. Do not wait to see if it happens again.
Why there's no routine screening test
Cervical cancer has the Pap test for screening. Uterine cancer does not have a routine screening test for women at average risk. That makes symptoms the main way it gets caught. Bleeding is the main symptom to watch for. Reporting it right away, instead of waiting, is what allows early diagnosis.
What tests come next
If you report bleeding, your doctor will likely start with a pelvic exam. A transvaginal ultrasound often comes next. This test uses sound waves and a small probe. It measures how thick the uterine lining is. Many people also need an endometrial biopsy. A thin tube or brush passes through the cervix. It collects a small tissue sample to check under a microscope. Both tests happen in the office. They take just minutes. You will not need anesthesia.
What to ask your team
Ask what could be causing your bleeding. Ask whether you need a biopsy or an ultrasound. If your doctor suspects a harmless cause, ask how cancer is being ruled out. Ask about your personal risk factors. Ask what new symptoms should bring you back sooner.
If a biopsy finds cancer
A positive biopsy usually leads to a referral to a gynecologic oncologist. This is a surgeon who specializes in cancers of the female reproductive system. More imaging may follow, such as a CT scan or MRI. These help your team plan surgery, which is often the next step and also confirms the stage. Most people move from a first report of bleeding to a treatment plan within a few weeks.
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Words to know
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Common questions
What is the most common sign?
Abnormal vaginal bleeding is the most common sign — bleeding after menopause, bleeding between periods, or unusually heavy periods. Any bleeding after menopause should always be checked.
Why is uterine cancer often found early?
Because abnormal bleeding tends to appear early and prompts people to see a doctor, uterine cancer is often found at an early, treatable stage.
What other symptoms occur?
Other possible signs include unusual vaginal discharge and pelvic pain, though bleeding is the main one.
Is there a screening test?
There is no routine screening test for uterine cancer in women at average risk, which is why reporting abnormal bleeding promptly is so important.
Questions to ask your doctor
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Last updated: 2026-08-18Next planned review: 2027-07-07
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How this page was created
Cancer Explained does not originate medical claims. Every page restates guidance already published by the National Cancer Institute, the CDC, the USPSTF and the FDA, in plain language, with the source cited so you can check the original yourself. AI does the translating and organizing; automated checks test claims, citations, clarity and safety before anything publishes. We do not employ clinicians and do not intend to — our work is translation and navigation, not clinical judgment. Nothing here is personal medical advice, and no page can account for your particular situation.
Editorial status: Source checked — This page was written with AI assistance and checked line by line against the sources listed on it. That confirms the sources support what the page says. It is not a medical review, and it does not confirm the page is complete or right for your situation.
Human medical review: not completed. Pages here are not signed off by a clinician before they publish. That is not an oversight we are quietly working around: we restate published guidance and cite it, so the authority belongs to the source rather than to us, and every page names where its claims come from — you can verify us instead of trusting us. Where a volunteer clinician has reviewed a page, their name and credentials appear on it; where no name appears, no clinician has checked it. We are glad to have reviewers and are recruiting them, and we do not hold pages back waiting for one. Use this site to understand your situation and to ask better questions of the people treating you.
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