When comparing follow-up imaging to a prior study, what should the report specify regarding interval change?

When comparing follow-up imaging to a prior study, what should the report specify regarding interval change?

• A. It should specify whether interval change is present and reference the comparison study date.
• B. It should repeat all prior findings exactly as written.
• C. It should ignore prior imaging and focus only on current findings.
• D. It should state that interval change is irrelevant to interpretation.

Answer: (A)

Documenting interval change is essential when a radiology report compares with a prior study. The report should clearly state whether there is any interval change and reference the date of the comparison. This anchors the findings in time, letting clinicians determine whether a lesion or abnormality has progressed, regressed, or remained stable, which in turn guides management and treatment decisions. If possible, describe the direction and, when feasible, the magnitude of change (for example, a reduction or increase in size). If no prior study is available, note that the comparison is not available. Repeating all prior findings verbatim doesn’t communicate what has changed or not, and ignoring prior imaging loses critical context. Saying interval change is irrelevant contradicts the purpose of follow-up imaging, which is to track treatment response or disease evolution over time.

Documenting interval change is essential when a radiology report compares with a prior study. The report should clearly state whether there is any interval change and reference the date of the comparison. This anchors the findings in time, letting clinicians determine whether a lesion or abnormality has progressed, regressed, or remained stable, which in turn guides management and treatment decisions. If possible, describe the direction and, when feasible, the magnitude of change (for example, a reduction or increase in size). If no prior study is available, note that the comparison is not available.

Repeating all prior findings verbatim doesn’t communicate what has changed or not, and ignoring prior imaging loses critical context. Saying interval change is irrelevant contradicts the purpose of follow-up imaging, which is to track treatment response or disease evolution over time.