Unchanged

3 things to know first

1. A comparison was made. “Unchanged” refers to an earlier scan or report.
2. It describes change, not harmlessness. A stable finding can still need follow-up.
3. The time interval matters. Stability over days is different from stability over years.

What it is

In an imaging report, unchanged means the radiologist did not see a meaningful difference in a particular finding compared with a prior examination. Reports may say “stable,” “no significant interval change,” or “grossly unchanged.” “Grossly” means broadly or on overall inspection; it does not mean that a measurement was identical to the last decimal place.

Why it appears on your report

Comparison helps clinicians judge whether a nodule, cyst, area of swelling, or other observation is growing, shrinking, or staying similar. The report should identify the finding being compared and, when available, the date of the earlier study. Different scan methods or image quality can limit how precise that comparison is.

How serious is it

Stability is often reassuring, but its meaning depends on what is stable, how long it has been stable, and the original reason for follow-up. “Unchanged” does not cancel a recommendation elsewhere in the report.

When to seek care urgently

Do not wait for a routine follow-up if you develop a new severe symptom, such as sudden weakness, severe chest pain, or major breathing difficulty. The word “unchanged” describes an image finding, not your current symptoms.

What usually happens next

1. Check which finding and prior examination the sentence refers to.
2. Read the impression and any follow-up recommendation.
3. Ask your clinician whether the comparison period changes the plan.

A simple analogy

Two photographs can show that a mark on a wall looks the same size. That comparison says nothing by itself about what made the mark.

Further reading

• RadiologyInfo — All About Your Radiology Report