PATIENT CHARACTERISTICS: Age: 15-65 (See Disease Characteristics) Performance status: Zubrod no more than 2 Hematopoietic: Not specified Hepatic: Bilirubin no greater than 1.5 mg/dL Renal: Creatinine no greater than 1.5 mg/dL Cardiovascular: Cardiac ejection fraction at least 50% Pulmonary: DLCO at least 50% of predicted Other: No severe concomitant medical or psychiatric illnesses