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General Surgery · Breast: imaging categories
Sample itemA 48-year-old woman has a screening mammogram showing a new cluster of fine pleomorphic microcalcifications and no mass. It is reported as BI-RADS 4. What is the next step?
Original practice item, not a recalled exam question. Nothing here is recorded.
The answer and the reasoning
A. Stereotactic vacuum-assisted core biopsy
BI-RADS 4 denotes a suspicious abnormality, with a malignancy probability from about 2% to 95%, and requires tissue diagnosis. Calcifications without a mass are sampled under stereotactic guidance with a vacuum-assisted core device. Short-interval follow-up is for BI-RADS 3, and routine screening is for categories 1 and 2.
Option by option
A. Stereotactic vacuum-assisted core biopsy (correct)
Correct. A suspicious category needs histological confirmation, taken under stereotactic guidance for calcifications.
B. Repeat mammography in 6 months
A 6-month follow-up applies to probably benign BI-RADS 3 lesions.
C. Immediate mastectomy
Definitive surgery without a tissue diagnosis is not justified.
D. Return to routine annual screening
Routine screening is for negative or benign findings, which this is not.
Source note: Original NextPrep sample item — pending expert review. This item is original practice material awaiting independent expert review, so confirm important facts in a standard textbook.
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