A Resolving Rash on the Breast.

Previously published Photo Quizzes are now featured in a mobile app. Get more information at http:// www.aafp.org/afp/apps. A 54-year-old woman presented with a nonpruritic rash on her nipple for the past three months. It began as a large plaque covering approximately one-fourth of the breast, but gradually decreased to a small plaque affecting only the nipple. She had occasional spontaneous milky discharge from the nipple. She had normal mammographic findings the previous month and no family history of breast cancer. Physical examination revealed a small pink plaque with scale on the left nipple. Compared with the unaffected side, there was a noticeable flattened appearance and loss of the normal Montgomery tubercles of the areola (Figures 1 and 2). There were no palpable breast masses or other similar skin plaques.