A study of 49 patients with malignant melanoma of the skin occurring over an 18‐year period is presented. The over‐all 5‐year survival was 43%. The prognosis was uniformly better for females and for lesions less than one cm. A poor prognosis was associated with primary lesions on the trunk, ulceration or hemorrhage of the primary and clinically and microscopically positive nodes. The authors conclude that a wide local excision of the primary lesion, including a 3 to 5 cm margin of skin, combined with an in‐continuity regional lymph node dissection should be the treatment of choice.