Cutaneous metastases. Report of two cases of prostatic cancer.

Less than 5 percent of internal malignant tumors metastasize to the skin. Prostatic carcinoma accounts for a small percentage of such tumors. The lesions are solid, rarely ulcerate, are few in number and are usually localized to the groin, the head, or the neck. The occurrence of cutaneous metastases from prostatic carcinoma frequently signifies well-advanced disease and portends a rapidly fatal course.