Invasive ductal carcinoma in a young male breast.

Carcinoma arising in the male breast is a rare occurrence. The risk of male breast cancer increases with age, and the median age of diagnosis for men is 10 years later than that for females (67 to 71 years). Because of the absence of lobules in the normal male breast, lobular carcinoma cases are seen infrequently. All of the microscopic types identified in the female breast have been encountered in male but the most frequent is invasive ductal carcinoma and less frequent is invasive lobular carcinoma. We present the case of a 20 years old man presenting with a left breast lump. After left mastectomy with level 2 axillary clearance, histopathological examination revealed infiltrating ductal carcinoma. Our case represents ductal carcinoma in a proven genotypic young male patient showing no exogenous or endogenous estrogens exposure.