Comparison of radiation therapy of classic and epidemic Kaposi's sarcoma.

Between 1963 and 1990, 92 lesions in twenty patients with Kaposi's sarcoma (KS) were treated using radiation therapy (RT). Fifty-nine classic Kaposi's sarcoma (CKS) lesions in 12 patients were treated with 990 cGy in 3 fractions-5,000 cGy in 25 fractions; 39 lesions (66%) showed a complete response (CR), 15 (25%) showed a partial response (PR) with complete symptomatic relief, and 5 lesions (8%) showed no response (NR). Only 6 of 59 lesions (10%) recurred in field with a median recurrence-free duration of 8 months. Thirty-three epidemic Kaposi's sarcoma (EKS) lesions in 8 patients were treated from 1,000 cGy in 5 fractions-3,000 cGy in 10 fractions. Thirty-one EKS lesions (94%) showed CR, and two lesions (6%) showed PR. An extensive review of the literature is also presented in the study here reported.