Multifocal male breast cancer: a case report.

Breast cancer among men is rare and accounts for < 1% of all breast cancer diagnoses. We report a 75-year-old man who presented with a painless breast lump and was found to have 2 separate foci of cancer in the same breast. Several cases of bilateral male breast cancer exist in the literature, but we are not aware of any previous reports of multifocal male breast cancer. Key issues surrounding the diagnosis and treatment of multifocal male breast cancer are discussed.