Ductal eccrine carcinoma is a rare malignant eccrine sweat gland tumor with ductal differentiation. The tumor may grow de novo or in the setting of underlying poroma. It has been found more commonly in lower extremity (44%) and trunk (24%). A few have been reported in the upper extremities (11%). One third of ductal eccrine carcinomas is fatal from distant metastasis. The authors present a case of ductal eccrine carcinoma in a 46-year-old male who developed a painful nodular lump at his right leg and painless bone lesion at left thigh. Seven months ago, he had a painless 2.5 cm nodular lump at his left axilla and the histopathology from marginal excision confirmed ductal eccrine carcinoma. The authors performed prophylaxis fixation and cementation at right tibia and left femur.

Keywords: Ductal eccrine carcinoma, Sweat gland carcinoma