The short answer
An incidental finding is something a scan picks up by chance. What happens next depends on the finding, so ask your care team what they think it is and what they recommend.
An incidental finding is something discovered by chance, unrelated to why the scan was ordered.
A report may use wording like 'indeterminate' or 'cannot exclude malignancy'. Ask your care team to explain what it means for your finding.
The American College of Radiology publishes white papers on managing incidental findings.
Follow-up tests and procedures have their own risks, so ask what the recommended next step is and why.
On this page
Choose how you want to read this
The whole article, with every detail and caution.
This page is for people whose scan, done for another reason, turned up something unexpected. It explains what the report wording means, what usually happens next, and what to ask.
What "Incidental" Means
You went in for something else. A fall, abdominal pain, a pre-operative check, a cough that would not settle. Then the report mentions something nobody was looking for. Radiologists call this an incidental finding. The lump itself is sometimes nicknamed an "incidentaloma." An incidental finding is something found by chance, unrelated to the reason the test was ordered.
What the Wording Means
Radiology reports are written for clinicians, not for you. Wording such as "cannot exclude malignancy" or "indeterminate" can be alarming. Do not guess what it means for you. Ask your care team to explain the exact words used about your finding.
The American College of Radiology (ACR) publishes white papers from its Incidental Findings Committee on managing incidental findings. The ACR says that when guidance on effective management is not available, there is potential for over-testing and over-treatment of incidental findings associated with very low risk.
What Happens Next
The next step depends on the finding. Your care team may recommend repeat tests, other tests, or a biopsy (removing a small sample of tissue to look at under a microscope). NCI notes that follow-up tests and procedures have their own risks, so ask what the recommended step is, why, and what the risks are.
Questions Worth Asking
Ask what the finding is most likely to be, not just what it could be. Ask whether the recommended follow-up is routine or whether there is specific concern about this finding. Ask who is responsible for making sure the follow-up actually happens, and get the date in writing. Tracking your own follow-up date is reasonable. If you develop new or worsening symptoms, or you do not hear back by the date you were given, call your care team right away.
Holding It Lightly
An incidental finding puts you into a diagnostic process without any of the usual warning. That abruptness accounts for much of the distress people describe. Follow-up is the way your care team works out what the finding is. If the wait is hard, tell your care team how you are feeling.
Sources
Common questions
Does an incidental finding usually mean cancer?
Only your care team can say what your finding most likely is. Ask them what it is most likely to be, and what they recommend next.
What does 'cannot exclude malignancy' mean?
Report wording like this can be alarming. Do not guess what it means for you. Ask your care team to explain the words used about your finding.
Why am I being asked to wait instead of having a biopsy now?
Ask your care team. NCI notes that follow-up tests and procedures have their own risks, and your care team can explain why they recommend this step for your finding.
What if I never hear about the follow-up scan?
Ask before you leave who is responsible for arranging it and when it is due, and note the date yourself. If you have not heard by that date, call your care team. If you develop new or worsening symptoms, call your care team right away.
Questions to ask your doctor
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Plain-language explanation of the published sources cited on this page. AI-assisted, source-checked, not clinician-reviewed.
Written by: Cancer ExplainedSources last checked: 2026-07-30 what this meansLast updated: 2026-10-16Next planned review: 2027-07-30
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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, 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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