Unchanged
Read Your Scan Editorial Team·Last updated
Written from published radiology references and reviewed for plain language. Not written or signed by a physician, and not a diagnosis. How we write these pages →
In plain language
Identical to the previous scan, as far as the images can tell. It carries no judgement about whether the finding is good or bad — only that it is doing nothing new.
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Where you'll see this
Follow-up reports, throughout the findings and the impression.
Your report may word it “Not significantly changed” or “Essentially unchanged”. These mean the same thing.
Questions worth asking your doctor
- Compared with my last scan, is this better, worse, or the same?
- How much change would matter enough to do something about it?
- When should the next scan be, and what would you be looking for?
How often does this turn up?
Unchanged is a direct comparison statement: this looks the same as it did on the study being compared against. It appears wherever prior imaging is available, and like stable it belongs to the vocabulary of change over time rather than to the vocabulary of description.
Does it mean something is wrong?
It is reassuring for the same reason stable is, and the two are used almost interchangeably. The nuance worth knowing is that unchanged points at one specific comparison rather than at a trend, so the useful question is which study it is being compared with and when. Unchanged since a scan three years ago carries far more weight than unchanged since one taken last month, and the report always names the comparison study for exactly this reason.
What to do with it
Where something is unchanged, the usual consequence is a longer interval before the next scan, or no further scan at all. Where a report says unchanged and lists a comparison from many years back, that combination frequently closes a question permanently. If a finding is unchanged but follow-up continues, it is fair to ask what the plan is and when it ends.
Frequently asked questions
- Unchanged compared to what?
- To the study named in the comparison line at the top of the report. That date matters as much as the word: unchanged over years is far stronger evidence than unchanged over weeks.
- Is unchanged the same as normal?
- No. It means the finding is still there and looks the same. Something abnormal can be unchanged, and that is often exactly the reassurance being offered — it is there, it is not doing anything.
- Does unchanged mean I can stop worrying?
- It is strong evidence in that direction, particularly over a long interval. Whether surveillance can stop is a decision for your doctor within whatever protocol applies, and it is a reasonable thing to ask about directly.
Comparison with an earlier scan
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