Intracystic Papillary Carcinoma in the Male Breast

Intracystic papillary carcinoma (IPC) is an extremely rare disease in the male breast with a few case reports. We present a case of a 61-year-old male who had IPC and review regarding diagnosis, characteristics and treatment. He had a chief complaint of a subareolar mass. It was diagnosed as a benign cystic intraductal papilloma by fine needle aspiration outside hospital. His radiologic studies including mammography and ultrasonography showed a suspicious malignant mass categorized as a BIRADS 4A in the right subareolar area. Therefore, the patient underwent wide excision without sentinel lymph node biopsy. The final pathologic results revealed a 1.6 ㎝ sized intraductal papillary carcinoma of low nuclear grade with clear resection margin. He has taken tamoxifen and received adjuvant radiation therapy.