N Ishi Department of Dermatology, Yokohama city University School of Medicine
Source of Support: None, Conflict of Interest: None
ABSTRACT: A seventy-two-old man had a rough surface and a beown pigmented macule on his right nipple and areola for a few months. Microscopic examination revealed that Paget cells had infiltrated the epidermis and partially invaded the basal membranes. A mass of comedo carcinomas had partially invaded the dermis. Radical mastectomy was performed. Mammary Paget's disease in the male breast is so serious that prompt biopsy of the eczematous region of the nipple necessary.