PATIENT CHARACTERISTICS: Age: 18 and over Performance status: Not specified Life expectancy: Not specified Hematopoietic: Not specified Hepatic: No chronic active or persistent hepatitis Bilirubin less than 2 mg/dL (unless history of Gilbert's disease) Renal: No history of chronic renal insufficiency Creatinine less than 1.5 mg/dL OR Creatinine clearance greater than 60 mL/min Cardiovascular: At least 6 months since myocardial infarction No unstable angina No cardiac arrhythmias other than chronic atrial fibrillation LVEF at least 50% Pulmonary: DLCO at least 50% Other: No medical illness that would preclude study treatment No uncontrolled infection No history of malignancy, other than curatively treated basal cell skin cancer or carcinoma in situ of the cervix Not pregnant or nursing Fertile patients must use effective contraception Not HIV positive