PATIENT CHARACTERISTICS: Age: 18 to physiologic 65 Performance status: Zubrod 0-2 Life expectancy: Not severely limited by concurrent illness Hematopoietic: Not specified Hepatic: Bilirubin less than 2 mg/dL SGPT less than 4 times normal Renal: Creatinine clearance at least 30 mL/min Cardiovascular: No uncontrolled arrhythmias or symptomatic cardiac disease Pulmonary: No symptomatic pulmonary disease FEV1, FVC, and DLCO at least 50% of predicted Other: Not pregnant or nursing Fertile patients must use effective contraception HIV negative No spinal cord compression