The short answer
Remission means the signs and symptoms of cancer are reduced. No Evidence of Disease (NED) means tests show no detectable cancer. Doctors usually say there are no signs of cancer at this time rather than 'cured,' because some cancer cells can remain in the body for many years after treatment.
Complete Remission and NED mean no cancer is currently detectable on tests.
Partial Remission means signs and symptoms are reduced but not all have gone away.
Doctors avoid promising a cure because some cancer cells can remain in the body for many years after treatment.
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Immediate Answer
This page is for anyone who has heard "remission," "NED," or "cancer-free" and wants to know how they differ. People often say "cancer-free." Oncologists (cancer doctors) use more precise terms:
- Complete Remission: All signs and symptoms of cancer have disappeared.
- No Evidence of Disease (NED): A phrase often used when tests show no detectable cancer. NCI's prognosis page does not define it, so ask your team what it means in your case.
- Partial Remission: The signs and symptoms of cancer are reduced, but not all have gone away.
Doctors usually say remission or NED rather than "cured" because some cancer cells can remain in the body for many years after treatment.
Terminology Comparison Table
| Term | What It Means | What It Does NOT Mean | Why Doctors Use It |
|---|---|---|---|
| Complete Remission | All signs and symptoms of cancer have disappeared. | Does not guarantee the cancer is gone for good. | Describes the response based on available tests. |
| No Evidence of Disease (NED) | Tests show no detectable cancer. | Does not mean follow-up can stop. Ask your team. | Describes current test findings. |
| Partial Remission | Signs and symptoms are reduced, but not all have gone away. | Does not mean cure. | Your team uses it to plan next steps. |
Why Don't Doctors Say "Cured"?
Cure means there are no traces of your cancer after treatment and the cancer will never come back. NCI says recurrent cancer starts with cancer cells that the first treatment did not fully remove or destroy, which may be too small to show up in follow-up tests. If they grow, that is called a recurrence. For cancers that return, most do so within the first 5 years after treatment, but cancer can come back later. This is why oncologists say NED or complete remission instead of "cured," and why they ask you to keep a regular schedule of checkups. Call your care team right away if you notice new symptoms.
Sources
Common questions
Is No Evidence of Disease (NED) the same as being cured?
No. NED is often used when current tests, scans, and exams show no sign of cancer. Doctors avoid promising a cure because, NCI says, some cancer cells can remain in the body for many years after treatment.
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Plain-language explanation of the published sources cited on this page. AI-assisted, source-checked, not clinician-reviewed.
Last updated: 2026-10-16Next planned review: 2027-07-23
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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, and this 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 then compared with the sources listed on it, looking for statements those sources do not back up. That check is not a sentence-by-sentence record and can miss errors. 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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