Case 9 Answer 3

BI-RADS 2, Benign. All fat-containing masses are considered benign findings. Fat necrosis is a rapidly evolving process compared with most other findings in the breast. One would expect that this area will look different on next year's screening mammogram.

For extra credit, what do you think the round density in the middle of the finding is likely to be?

• Hematoma
• Oil cyst
• Cancer
• Cyst