OUTLINE: This is a randomized, multicenter study. Patients are stratified according to type of nodal involvement (N1 vs N2), number of positive nodes (1 vs 2-4 vs 5 or more vs not assessed), Breslow primary (T1-2 vs T3 vs T4 vs unknown), ulceration of primary tumor (absent vs present vs unknown), sex, and center. Patients are randomized to one of two treatment arms.