PATIENT CHARACTERISTICS: Age: 18 to 60 Performance status: WHO 0-2 Life expectancy: At least 3 months Hematopoietic: Not specified Hepatic: Bilirubin less than 2 times normal Renal: Creatinine less than 2 times normal Cardiovascular: Ejection fraction normal Pulmonary: PLCO diffusion greater than 60% Other: No active uncontrolled infections No other progressive malignant disease Not a poor medical risk because of nonmalignant systemic disease