Fig. 3From: Primary cutaneous apocrine gland carcinoma from areolar tissue in a male patient with gynecomastia: a case reportImmunohistochemistry findings show that the tumor cells are positive for cytokeratin AE1/AE3 (a) and gross cystic disease fluid protein (GCDFP)-15 (b). The tumor cells also express estrogen (c) and progesterone receptors (d) (a–d, 200×)Back to article page