Writing a Great Radiology Report
- The report is the product. The images are just raw material; the report is the thing the rest of the hospital actually reads and acts on.
- A good report answers the clinical question first, then describes findings, then ties them together in an impression that tells people what to do.
- Be clear, be specific, and hedge honestly — say what you see, say how sure you are, and don't bury the one thing that matters under twelve things that don't.
- The impression is the part everyone reads. Treat it like the headline of a newspaper, not the fine print.
Here is a humbling truth about radiology: you can spot the subtle finding that three other people walked past, and it still doesn't count unless you can say it clearly. A brilliant read trapped inside a confusing report is like a perfect meal served on a flaming plate — nobody can use it. The report is where all your looking finally turns into something a human can act on.
So let's talk about how to write one that actually helps.
The report is a conversation, not a diary
Somewhere on the other end of your report is a tired clinician at 2 a.m. who has exactly one question: what is going on with my patient, and what do I do next? Your job is to answer that. The report isn't a journal of everything your eyeballs touched; it's a reply to a question someone asked you.
That framing fixes a lot. It tells you what to put first, what to emphasize, and what to leave on the cutting-room floor.
The anatomy of a report
Most reports share the same skeleton. The names vary by shop, but the bones are the same.
| Section | What it does |
|---|---|
| Clinical history / indication | Why the study was ordered — the question you're answering. |
| Technique | What you did: modality, contrast, protocol, any limitations. |
| Comparison | What prior studies you looked at (this is huge — change over time is often the whole story). |
| Findings | The detailed observations, organized and systematic. |
| Impression | The bottom line: what it means and what should happen next. |
The findings and the impression do different jobs. Findings are the evidence; the impression is the verdict. Mixing them up — burying the verdict in the evidence — is the single most common way a report fails its reader.
Findings: say what you see, well
In the findings, you're describing what's actually on the image. Lean on the discipline of describing a finding properly: location, size, character, and so on. A few habits that pay off:
- Be specific, not vague. "Mass in the liver" makes the reader work; "a 3.2 cm arterially enhancing mass in segment VII" hands them an answer.
- Measure things that matter. Numbers let the next radiologist say whether it grew. "Slightly bigger" is an argument; a measurement is a fact.
- Stay organized. Go organ by organ, or use a structured template. A predictable order means the reader can find what they need without a treasure map.
Comparison to priors is quietly one of the most powerful things in a report. A 6 mm nodule that's been stable for five years and a new 6 mm nodule are the same dot on the screen and completely different clinical events. Always look back, and always say what you compared to.
The impression: the part everyone actually reads
Here's the worst-kept secret in the building: most clinicians read the impression and skim the rest. So the impression has to stand on its own.
A strong impression does three things — it answers the clinical question, it leads with the most important finding, and it says what should happen next when that's appropriate ("recommend follow-up CT in 6–12 months," "correlate clinically," "findings concerning for X"). Order by importance, not by anatomy. The cancer goes before the trivial cyst, every single time.
The "kitchen sink" impression — numbering ten findings of wildly different importance with equal weight — hides the one that matters. If everything is bold, nothing is. Put the critical finding first and let the small stuff trail behind it, or fold it into the findings instead.
Hedge honestly, but commit
Radiology lives in shades of gray, and your language should be honest about how confident you are. "Diagnostic of," "consistent with," "suggestive of," and "cannot exclude" are not interchangeable — they're a confidence dial, and the reader is listening to exactly which word you picked.
The trap is hedging on everything. A report where every sentence could mean anything is useless; you've technically never been wrong and never been helpful. When you're sure, sound sure. When you're not, name the differential and say what would settle it.
If you find a true emergency, the report is not enough. Urgent findings need a phone call and documentation that you made it — see communicating critical results. The report records; the phone call rescues.
A few habits that age well
Incidental findings deserve a sane, consistent approach rather than panic or silence — there's a whole craft to managing them. Avoid jargon the referrer won't know, spell out abbreviations the first time, and proofread, because voice-recognition software has a creative streak and "no acute" can become "no, a cute" if you let it.
The throughline of all of this: write the report you'd want to receive about someone you love. Clear, honest, organized, and ending with a bottom line that tells a busy human what to do. That's the whole job — and it's the part that actually saves the patient.