An Elderly Male with Microinvasive Ductal Carcinoma of the Breast Characterizedby Bloody Nipple Discharge

Abstract

The patient was a 74-year-old male. (History) The patient had been experiencing left papillary hematogenous secretion for approximately 3 years. He had been neglecting it for some time, but when he began to notice persistent secretion, he came to our clinic.(Present condition) On physical examination, no mass was palpable, and only bloody nipple discharge was observed. Mammary ultrasonography showed a hypoechoic mass of approximately 8 mm in size in the left nipple. A needle biopsy was performed, a diagnosis of invasive ductal carcinoma was made, and a thoracic muscle-sparing mastectomy and sentinel lymph node biopsy were performed. Histopathological findings showed a diagnosis of invasive ductal carcinoma: tubule-forming type, pT1aN0M0 stage I, ER (+), PgR (+), HER2 score 1, and ki67 30%.(Discussion) Male breast cancer accounts for approximately 1% of all breast cancers. The initial presentation is often palpable as a painless mass. Noninvasive ductal carcinoma is common, although bloody papillary discharge may be present, and invasive ductal carcinoma may be advanced. We report this case because it was treated early and the patient had a good course.