A Case of Invasive Ductal Carcinoma with Unilateral Diffuse Microcalcifications Appearing as Pleomorphic Structures

Abstract

A 55-year-old woman visited our hospital because of left breast induration. Mammography showed widely spread unilateral diffuse microcalcifications with pleomorphic, linear or fine structures (category 5), but no mass was detected on ultrasonography. Core needle biopsy demonstrated invasive ductal carcinoma. Pectoral muscle-preserving mastectomy (Bt + Ax) was performed. Histological examination revealed invasive ductal carcinoma with a predominant intraductal component (WHO classification) without axillary lymph node metastases. Both estrogen and progesterone receptors were negative.