Fig. 4From: A case of eccrine porocarcinoma characterized by a progressive increase in the level of Ki-67 index: case report and review of literature(a, b) Histopathology revealed cells contained atypical cell nuclei with conspicuous nucleoli, and small amount of eosinophilic cytoplasm. Mitotic figures and apoptotic cells were existed in the lesion (original magnification × 100 or 400, H&E). (c, d, e, f, g, h) Immunohistochemically, the lesional cells were positive when stained with antibodies against cytokeratin 5/6, Ki-67, and PAS, highlighted scattered ductal structures throughout the neoplasmBack to article page