Abstract
Male breast carcinoma in a 16-year-old boy is reported. The patient complained of a palpable tumor. The tumor lacked in malignant findings by palpation and imaging methods. Cytodiagnosis resulted in class I-II. The tumor once diminished after needling, but after that, it became large again. Lumpectomy was performed. The excised tumor was diagnosed as mucinous carcinoma. Simple mastectomy without axillary lymph node dissection was carried out. Chemotherapy was not given and the patient is closely followed on an amvulant basis. There has been no recurrence, as of 2 years after surgery.
Male breast carcinomas are reportedly common in relatively aged men, particularly in their sixties. This case is the 4th in Japan, in which breast carcinoma occurred in men less than 20 years of age. There is a variety of etiologic hypotheses, and in this case any probable causes could not be clarified. The prognosis of male breast carcinomas in said not to be different from that of female breast carcinomas, if early diagnosis and radical operation can be successfully undertaken.
