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

Abstract

(Patient) 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. Aneedle biopsy was performed, a diagnosis of invasive ductal carcinoma was made, and a thoracic muscle-sparingmastectomy and sentinel lymph node biopsy were performed. Histopathological findings showed a diagnosis ofinvasive ductal carcinoma: tubule-forming type, pT1aN0M0 stage I, ER (+), PgR (+), HER2 score 1, and ki6730%.(Discussion) Male breast cancer accounts for approximately 1% of all breast cancers. The initial presentation isoften palpable as a painless mass. Noninvasive ductal carcinoma is common, although bloody papillary dischargemay be present, and invasive ductal carcinoma may be advanced. We report this case because it was treated earlyand the patient had a good course.