2017 Volume 32 Issue 1 Pages 16-20
A 70-year-old man presented with a solitary reddish nodule on the left axilla, which he had for five years. The skin biopsy was performed at the previous hospital during the treatment of prostate carcinoma. He was referred to our hospital for further treatment. The physical examinations revealed an 80×50-mm hemorrhagic pedunculated tumor and a swollen left axillary lymph nodule on the left axilla. The positron emission tomography-computer tomography (PET-CT) scan showed no metastatic lesions on the whole body. We performed the tumor resection with a 2-cm margin from the tumor and a left axilla lymph nodes biopsy under local anesthesia. Histological examination revealed tumor cells having acidophilic cytoplasm and clear nucleolus with glandular structures and decapitation secretion in the primary lesion and lymph nodule. We performed the total axillary lymph node dissection. We diagnosed the patient with primary pedunculated cutaneous apocrine carcinoma on the axilla with lymph node metastasis. Primary pedunculated cutaneous apocrine carcinomas are rare.[Skin Cancer (Japan) 2017 ; 32 : 16-20]