PATIENT CHARACTERISTICS: Age: Under 56 Performance status: Not specified Life expectancy: Not specified Hematopoietic: Not specified Hepatic: No acute hepatitis No other severe hepatic disease Renal: Creatinine less than 2 times normal for age, weight, and sex Cardiovascular: No symptomatic cardiac disease Pulmonary: No active pulmonary disease No history of pulmonary fibrosis No severe hypoxemia (pO2 less than 70 mm Hg and DLCO less than 70%) No mild hypoxemia (pO2 less than 80 mm Hg and DLCO less than 60%) Other: HIV negative No severe limitations due to diseases other than malignancy