Dermoscopic Features of Eccrine Porocarcinoma Arising from Hidroacanthoma Simplex
Figure 4
(a) In the right red nodule, the epidermis was prominently acanthotic with intraepidermal proliferation of clear cells and squamoid cells. Dermal invasion of atypical squamoid cells was partially apparent (HE 20). (b) In the right red nodule, the tumor cells were focally positive for carcinoembryonic antigen (CEA, 20). (c) In the right red nodule, markedly atypical cells proliferated and extended throughout the entire thickness of the acanthotic epidermis (HE 400). (d) The atypical clear cells expressed CEA (CEA 400). (e) The ductal structures expressed CEA (CEA, 400).
