A. Ridge of normal fibroglandular tissue B. Lipoma C. Hamartoma D. Galactocele E. Fat necrosis
Correct Answer: C. Hamartoma
Explanation:
This large mass contains mixed fat and glandular tissue with well-defined margins. This is the appearance of a hamartoma (also known as a fibroadenolipoma). Sometimes referred to as a “breast within a breast,” sometimes a “slice of salami”, this finding is benign, and does not need further workup.
The other fat-containing masses should not be confused, because each has a distinctive appearance on mammography. See the related cases below.
What is the appropriate BI-RADS assessment category for this exam?
A. BI-RADS 1 B. BI-RADS 2 C. BI-RADS 3 D. BI-RADS 4 E. BI-RADS 5
Correct Answer: B. BI-RADS 2
Explanation:
A hamartoma is a benign finding, and assuming that nothing else suspicious is identified on the mammogram, no further work-up is indicated.