Malignant sweat gland tumor of breast arising in pre-existing benign tumor: A case report

Figure 3 Photomicrographs of the cystic mass. A: Photomicrograph demonstrating predominantly cystic mass with solid portion of carcinoma (arrowhead) [Hematoxylin and Eosin (HE) staining, × 20 magnification]; B: The carcinoma was composed of epithelial cells with clear or eosinophilic cytoplasm, prominent nucleoli, and frequent mitosis (HE staining, × 400 magnification); C: Residual benign tissue was smaller than 0.1 cm (HE staining, × 200 magnification); D: Microinvasion to fibrous cystic wall was noted (arrowhead) (P53 staining, × 100 magnification).