Vincristine 0.25 mg/m2 by IV push and bleomycin 5 units daily by continuous infusion were given on days 1, 2, 3 and 4, together with prednisone 1,000 mg/m2 po in 4 divided doses either on days 1, 3, 5, and 7 (6 patients) or on days 1 and 3 (11 patients) to 17 patients with various lymphoproliferative diseases who had failed their previous treatment program. Fourteen were leukopenic and/or thrombocytopenic. Of 10 patients with non-Hodgkin's lymphoma 2 achieved complete remission and 5 a partial response. Both patients with Hodgkin's disease achieved partial response. A decrease in plasma M protein (median decrease 51%) was observed in 3/3 patients with multiple myeloma and 2/2 with Waldenstrom's macroglobulinemia. Decrease in tumor cell infiltration by 48%, 58% and 100% was observed in 3 patients (2 with macroglobulinemia and 1 with myeloma) in the bone marrow. Leukopenia of less than 3,600/mm3 and thrombocytopenia of less than 70,000/mm3 reverted to normal in 5/7 and 7/10 patients, respectively. Remission duration ranged from 4 to 35+ weeks (median 17 weeks). Three patients had severe GI bleeding. Psychosis controlled by phenothiazines was observed in one, and bleomycin toxicity (anaphylaxis, skin rash, and lung toxicity, one each) was observed in 3 patients. No severe neurotoxicity was observed.