Remission vs. No Evidence of Disease: What's the Difference?

These terms all describe how much cancer is left after treatment, and they overlap:

• Complete remission — no cancer detectable on exams, bloodwork, or imaging.
• No evidence of disease (NED) — the same idea, described with different words.
• Partial remission — the cancer has shrunk meaningfully but is still detectable.

Complete remission means your care team cannot find any sign of cancer, using the tests available: a physical exam, bloodwork, and imaging. It does not mean every single cancer cell is gone. It means none can currently be detected. This distinction matters. In rare cases, some cancer cells can remain below what any test can find. That's part of why follow-up continues even after complete remission.

Partial remission means treatment has shrunk the cancer by a meaningful amount, often defined as at least half its original size, without it growing back during that time. This is not a disappointing result. It often reflects real, useful treatment benefit. Depending on your situation, your team might continue the same treatment, since it's working, or adjust it to try to deepen the response further.

No evidence of disease and complete remission both mean no cancer is currently detectable. Doctors at different centers, and for different cancer types, tend to favor one phrase or the other more by habit than by any strict rule. Blood cancers often use "remission." Solid tumors, especially ones followed with scans, more often use "no evidence of disease." The underlying finding is the same either way.

None of these terms means cured. A cure is something doctors become confident about gradually. This usually happens only after enough time has passed without the cancer returning, and how much time varies by cancer type. There is always some risk of recurrence for anyone who has had cancer, even after years of remission or NED, though that risk generally falls the longer it has been. Some doctors shift to language like "cancer-free" once enough time has passed. But this describes growing confidence over time, not a guarantee.

Follow-up continues regardless of which term applies to you: complete remission, NED, or partial remission. The schedule and type of monitoring, whether exams, bloodwork, or imaging, depends on your specific cancer type and history. It does not depend on which of these words your doctor happens to use.

None of these terms signal urgency on their own. They describe where things stand, not an emergency. What matters is keeping your scheduled follow-up appointments, since that is how any change would be caught early.

• Am I in complete or partial remission, or would you describe this as no evidence of disease?
• What does that mean for my specific cancer type and risk of recurrence?
• What will my follow-up schedule look like from here?
• What symptoms, if any, should prompt me to come in sooner than my next visit?

Some blood cancers, like certain leukemias, use highly sensitive tests that can detect extremely small amounts of remaining disease, sometimes called measurable residual disease, even after standard tests show complete remission. This more sensitive testing is not yet standard for most solid tumors, where remission and NED are judged mainly by imaging and exams instead. This is part of why remission means slightly different things in practice across cancer types, even though the underlying concept, no detectable disease by the tests used, stays the same. Ask your oncologist which specific tests are behind your particular remission or NED status.

People around you may use "remission," "NED," and "cancer-free" loosely. They may not know the small differences your doctor intends. This can create confusing or mismatched expectations, especially with well-meaning relatives. It can help to explain your result in your own words. Say exactly what it means, and what continued follow-up will look like. Don't let people assume the word alone tells the whole story. You get to decide how much detail to share, and with whom.

• Cleveland Clinic — Cancer Remission: What It Means
• UT MD Anderson — Remission, cancer-free, no evidence of disease: what's the difference?