Between 1967 and 1978, 152 Algerian patients (31 children and 121 adults) with Hodgkin's disease were treated with the mechlorethamine, vincristine, procarbazine, prednisone combination (MOPP) alone and without radiotherapy. They were separated without lymphography into limited stage (n = 37) and extensive (n = 115) stage. The high initial failure rate (54%) was principally due to inadequate symptomatic treatment and to the patients' low socio-economic status. The complete remission rate was 45% (54% for limited stages; 42% for extensive stages) and significantly higher in women (58%) than in men (37%). In 20/23 cases relapses occurred during the first 4 years of complete remission; however, the final relapse was observed during the 12th year of complete remission. The actuarial relapse rate at 15 years was 48%. The long-term (10-15 years) life expectancy was 31% overall and 70% in cases with complete remission. Prognosis was significantly better in patients with limited forms and/or without systemic symptoms.