What it is
Modern scans see a lot, so radiologists often notice unrelated things: a small cyst, a nodule, a benign-looking spot. “Incidental” describes how it was found, not how serious it is.
How common is it?
Extremely common — incidental findings appear on a large share of CT and MRI scans, and the vast majority turn out to be harmless.
What's usually next
The radiologist usually says whether it is clearly benign, needs a one-time dedicated look, or should be checked again after an interval. Many established guidelines exist specifically for handling common incidentals.
When it usually isn't — and when it might be — worrying
Usually reassuring
- Described as “benign,” “simple,” or “no follow-up needed”
- Small and well-defined
- A common entity like a simple cyst
Worth discussing with your doctor
- Called “indeterminate” with recommended follow-up
- A specific specialist referral is suggested
- Growth compared with any prior imaging
Questions to ask your doctor
- 1Is this finding clearly benign, or does it need follow-up?
- 2What follow-up, if any, do guidelines recommend?
- 3Could it explain any symptoms I have?
- 4When exactly should the next scan happen?
Educational use only. This explanation helps you understand terminology on your report. It is not a diagnosis, is not FDA-cleared, and does not replace your doctor. Bring questions to your care team.