PATIENT CHARACTERISTICS: Age: 18 and over Performance status: Karnofsky 80-100% Life expectancy: At least 3 months Hematopoietic: Absolute neutrophil count greater than 1,000/mm3 Platelet count greater than 75,000/mm3 Hemoglobin greater than 9 g/dL Hepatic: Bilirubin no greater than 1.5 times upper limit of normal (ULN) SGOT or SGPT less than 5 times ULN Alkaline phosphatase less than 5 times ULN Renal: Creatinine no greater than 1.5 times ULN Other: Not pregnant No active opportunistic or any other serious infection No other malignancy (including any other AIDS-associated malignancy) except stable cutaneous Kaposi's sarcoma No serious medical or psychiatric condition