Abstract
Eccrine porocarcinoma is a rare malignant neoplasm that presumably arises from the intraepidermal ductal portion of the eccrine sweat glands. We presented a case of a 69-year-old female with a tumor of 10 years' duration on her right buttock, which enlarged rapidly in the last 2 years. Physical examination revealed a 55 × 50 mm red, erosive tumor on the right side of her buttocks. She was treated with wide local excision with 10 mm surgical margins around the tumor. Histopathological findings were consistent with eccrine porocarcinoma with lymphovascular invasion, which is one of the predictive features of death resulting from eccrine porocarcinoma. Systemic examination showed multiple lymph node metastasis and carcinomatous lymphangitis ; therefore, she underwent adjuvant chemotherapy with docetaxel. [Skin Cancer (Japan) 2015 ; 30 : 22-25]
