PATIENT CHARACTERISTICS: Age: 16 to 44 Performance status: ECOG 0-2 Life expectancy: At least 3 months Hematopoietic: Not specified Hepatic: SGOT and SGPT less than 1.5 times upper limit of normal Bilirubin less than 1.5 mg/dL Renal: Creatinine less than 1.5 mg/dL AND/OR Creatinine clearance greater than 75 mL/min Cardiovascular: No history of cardiac disease No symptomatic cardiac disease Ejection fraction greater than 50% Pulmonary: FEV1 greater than 50% predicted (greater than 75% if received thoracic irradiation) DLCO greater than 50% predicted Other: Not pregnant Fertile women must use effective contraception HIV negative No active bacterial, fungal, or viral infection Hepatitis B negative