Figure 3a. Mammograms obtained in a 63-year-old woman with a silicone-filled subpectoral implant who developed a large hematoma during biopsy. A negative specimen radiograph (not shown) was obtained. (a) Craniocaudal scout mammogram shows a faint 5-mm cluster of amorphous calcifications (arrow). (b) Craniocaudal 15° stereotactic mammogram acquired after five tissue samples with 11-gauge vacuum-assisted biopsy (when initial specimen radiograph [not shown] was negative), shows a 4-cm hematoma obscuring the calcifications and preventing lesion retargeting. The electronic square marker is at the prebiopsy site of the calcifications. A repeat specimen radiograph (not shown) obtained after 12 tissue samples also was negative, but histopathologic slides (not shown) revealed proliferative fibrocystic changes, with calcifications evident in some ducts. Mammograms (not shown) have been stable for 20 months after biopsy.