Study of usefulness of II,III stage malignant melanoma lymphadenectomy in dermatology, Yokohama City Univ..

Statistical analysis was performed on the cases with stage II and III malignant melanoma in Yokohama City University School of Medicine. Survival rate was not affected by lymph node dissection on patients with stage II and III malignant melanoma using Kaplan-Meirer method. But 5-year survival rate and 10-year survival rate of patients with stage III, N1 malignant melanoma were slightly improved by lymph node dissection.