PATIENT CHARACTERISTICS: Age: 18 and over Performance status: Karnofsky 60-100% Life expectancy: Not specified Hematopoietic: WBC at least 3,500/mm3 Absolute neutrophil count at least 1,500/mm3 Platelet count at least 100,000/mm3 Hepatic: Bilirubin no greater than 1.5 mg/dL SGOT and SGPT no greater than 2.5 times upper limit of normal Renal: Creatinine no greater than 1.5 mg/dL OR Creatinine clearance greater than 60 mL/min Cardiovascular: No history of cardiac arrhythmias No congestive heart failure No myocardial infarction in the last 6 months Neurologic: No grade 3 or greater neurotoxicity Other: HIV negative No serious or uncontrolled infection Not pregnant Adequate contraception required of all fertile patients during study and until 2 months after study