Fig. 1

A Apocrine adenosis: Duct epithelial cells scattered singly and in small clusters and sheets with cribriform spaces. The majority of the cells show apocrine differentiation with abundant eosinophilic granular cytoplasm. There is mild nuclear pleomorphism. B Fibroadenoma: low-power image showing tight, cohesive clusters of benign duct epithelial cells in a background of abundant bare bipolar nuclei. C Granulomatous mastitis: benign duct epithelial cells admixed within granulomatous epitheloid cells and chronic inflammatory cells. D Ductal Carcinoma: Dyscohesive clusters of pleomorphic cells having moderate cytoplasm, high nuclear-cytoplasmic ratio, and an irregular nuclear membrane with prominent nucleoli in a hemorrhagic background