SINCE James Paget first noted and described the cases of areolar eczema followed by female breast cancer in 1874, many reports on this condition have been published. Fifteen years after Paget's report, Darier found the cells to have a histologically characteristic appearance in the epidermis of the nipple and the concept of "Paget's disease" was then established. However, this condition in the male breast is extremely rare. In 1964, Hutchin and Houlihan1 collected only 12 cases of Paget's disease in men from the world literature, and added one of their own. This paper presents an additional case of Paget's disease in the male breast. Report of Case A 56-year-old married man had been in perfect health up to one year prior to admission, when he first noticed a small, hard, painless mass in the right breast. Eight months later, the patient had trauma on the nipple, where the covering