Apocrine Carcinoma of Undetermined Origin—A Case Report—

Abstract

A 67-yearold woman noticed a growing tumor in her left axilla. After receiving an initial diagnosis of left axillary cancer, excision and axillary lymph node dissection were performed, and she was diagnosed with apocrine carcinoma. It was difficult to determine if the apocrine adenocarcinoma arose from the accessory breast or the skin. The tumor was positive for estrogen receptor and progesterone receptor. She was followed while receiving endocrine therapy for 5 years postoperatively. A neck tumor was detected 9 years after the surgery, and she was diagnosed with recurrent apocrine carcinoma. Local resection was performed, and hormone therapy was reinitiated.