PATIENT CHARACTERISTICS: Age: Under 50 Performance status: Karnofsky 70-100% Life expectancy: Greater than 3 months Hematopoietic: Granulocyte count at least 1,000/mm3 Platelet count at least 100,000/mm3 Hepatic: Bilirubin less than 2.0 mg/dL Renal: Creatinine clearance greater than 50% of normal Pulmonary: LVEF greater than 41% Other: HIV negative Not pregnant