Metastasis to the male breast from carcinoma of the urinary bladder

We report a case of male breast metastasis from a urothelial carcinoma. Onl y two cases of this type of metastasis have been previously reported, and t hese were in the female breast. Clinical examination showed a progressive s welling of the left mammary region, with periareolar skin infiltration. Bot h mammography and ultrasound showed a rounded mass. Only histological exami nation with immunohistochemical staining permitted the correct diagnosis to be made. A particular feature of the present case is the absence of contra lateral gynaccomastia, normally seen in cases of metastatic tumour to the b reast from prostatic carcinoma.