PATIENT CHARACTERISTICS: Age: 18 to 70 Performance status: SWOG 0-2 Life expectancy: Not specified Hematopoietic: At least 4,000/g CD34+ peripheral blood stem cells available See Disease Characteristics Hepatic: Bilirubin no greater than 1.5 mg/dL Transaminases no greater than 4 times upper limit of normal No active chronic hepatitis or liver cirrhosis Renal: Creatinine no greater than 2.0 mg/dL Cardiovascular: Left ventricular ejection fraction at least 50% Pulmonary: FEV1, FVC, and DLCO at least 50% of predicted Other: HIV negative No active infection requiring intravenous antibiotics Not pregnant or nursing Effective contraception required of all fertile patients