Whenever a report describes something as new — a nodule, a lesion, an enlarged node, a dilated duct — the highest-yield next step is almost never a new investigation. It is finding out whether it was there before.
Radiology reports compare against whatever the reporting radiologist could see. Imaging done at another hospital, in another state, or before a records migration is frequently not in that comparison, and the patient often has it on a disc or a phone photograph of a report. Asking costs one question. A nodule unchanged over three years, a duct that has always been prominent, a node that shrank and regrew with a past infection — each of these closes a pathway that would otherwise run to PET, biopsy or months of surveillance.
The same reasoning works for numbers. An eGFR of 48 means one thing alone and another beside a value of 47 from four years ago. Before ordering the next test, spend the two minutes finding the last one.
- Ask the patient directly whether they have older scans, discs or reports from elsewhere
- Check whether the radiologist actually had prior imaging to compare against
- Apply it to laboratory values too — a single creatinine or eGFR is nearly uninterpretable
- Where old imaging exists outside your system, get it uploaded before ordering anything further
- Record explicitly in the notes when no prior imaging exists — that is itself a finding
Why it matters
Most of the cost and anxiety of incidental findings comes from treating an unchanged thing as a new one.
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