Abstract
A fifty four-year-old man presented with apocrine gland carcinoma on the right lower abdomen. The lesion revealed a red plaque, 32×24mm in size with a few subcutaneous nodules. Histopathologically, tumor cells proliferated from the dermis to the upper subcutaneous fatty tissue. The apocrine gland carcinoma formed a lumina without any evident atypicality, and also showed decapitation secretion in part. As for enzyme histochemical staining, the tumor cells showed a strong positive reaction for acid phosphatase and beta-glucuronidase. Immunohistochemically, the tumor cells were positive for carcinoembryonic antigen, but negative for S-100 protein.
