Malignant Eccrine Poromas are the most common form of sweat gland cancer and fortunately I only rarely encounter them in both my The Woodlands dermatology and Conroe dermatology offices. Clinically, a Malignant Eccrine Poroma appears very similar to a benign Eccrine Poroma, however they are more likely to ulcerate or develop a black nodule. Malignant Eccrine Poromas are most common in elderly patients over the age of 70. The legs are most commonly affected followed by the feet. The face and extremities can also be the site of Malignant Eccrine Poromas. Malignant Eccrine Poromas most commonly metastasize to lymph nodes. Mohs surgery or wide excision are the preferred treatments.
