Eccrine porocarcinoma is a rare carcinoma but it is the most common malignant sweat gland tumor. It can develop de novo or from poroma ground. It is mostly seen in elderly patients and the most common locations are the lower limbs, the trunk, and the head and neck. This condition is an important differential diagnosis in several clinical entities. We present a case of eccrine porocarcinoma diagnosed clinically and histomorphologically. We also reviewed the available information on this condition from published literature.