PATIENT CHARACTERISTICS: Age: 70 and under Performance status: Karnofsky 70-100% Life expectancy: Not specified Hematopoietic: Not specified Hepatic: Bilirubin no greater than 2 mg/dL Renal: Creatinine clearance at least 50 mg/min Cardiovascular: Left ventricular ejection fraction at least 41% Other: Not pregnant HIV negative