Sequelae
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
The leftovers of something that already happened and finished — a scar, a healed fracture line, an old area of damage. Sequelae are a record of the past, not an active problem.
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Where you'll see this
The findings, usually with a word like "chronic", "old" or "prior" nearby.
Your report may word it “Sequela”, “Residua” or “Chronic sequelae”. 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?
Sequelae means the traces left behind by something that has already happened and finished — the visible aftermath rather than an active process. Reports use it constantly, particularly about the brain, the lungs and bones, and the word frequently appears alongside old, chronic or post-.
Does it mean something is wrong?
This is a reassuring word in disguise, because it explicitly locates the event in the past. Sequelae of a previous infection, of an old injury, of a previous stroke: all of these describe healing that has already happened and is not going anywhere. The reason it can be unsettling is that it sometimes names an event the reader did not know about — a small old stroke, an old fracture, a past infection that was never diagnosed. That is common, and finding it does not make it new.
What to do with it
Generally nothing follows from sequelae themselves, since there is nothing active to treat. Where they name a past event with implications — a previous stroke, say — the follow-up is about risk going forward rather than about the healed damage: blood pressure, heart rhythm, cholesterol. Sequelae are also reported so that a future radiologist does not mistake them for something new, which is a service to your later self.
Frequently asked questions
- Does sequelae mean I still have the condition?
- No — close to the opposite. It means the traces of something that has already resolved. The event is over; what remains is the mark it left.
- The report mentions sequelae of something I never knew I had. Is that possible?
- Yes, and it is common. Small strokes, old fractures and past infections can pass without ever being diagnosed, and their traces show up years later on a scan done for something else entirely.
- Do sequelae need treatment?
- The traces themselves do not — they are healed. Where they point to a condition with ongoing implications, attention goes to reducing the risk of another event rather than to what is already visible.
Comparison with an earlier scan
Where this word comes up
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