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Fig. 2B. —79-year-old asymptomatic woman who had one-stage mastectomy after percutaneous diagnosis of nonpalpable breast cancer. Craniocaudal view mammogram of left breast after stereotactic 11-gauge directional vacuum-assisted biopsy of both sites shows small hematoma adjacent to residual calcifications in left lower inner quadrant (larger arrow) and localizing clip without residual calcifications in upper outer quadrant (smaller arrow). Histologic analysis yielded ductal carcinoma in situ (DCIS) from both sites. Subsequent mastectomy and sentinel lymph node biopsy revealed multicentric DCIS with negative sentinel node.