(porocarcinoma) A carcinoma with eccrine differentiation arising from the sweat glands. It may arise de novo or as a malignant transformation of a pre-existing poroma. It usually grows in the legs, buttocks, feet, and trunk and usually presents as an ulcerative plaque. It is characterized by the presence of intraepidermal and dermal nests of malignant epithelial cells. It may recur after excision and metastasize to the lymph nodes and less frequently to distal anatomic sites.

A rare malignant neoplasm of the sweat glands. It most often develops as a form of degenerative progression from a benign ECCRINE POROMA.

Eccrine porocarcinoma is a rare type of skin cancer that may occur by chance or may develop from a benign (non-cancerous) skin tumor. They affect the eccrine sweat glands, which are the major sweat glands of the body. Eccrine porocarcinoma usually are found in adults older than 60 and appear as a single red elevated solid mass (nodule)...