PATIENT CHARACTERISTICS: Age: 18 and over Performance status: Karnofsky 60-100% Life expectancy: Not specified Hematopoietic: WBC at least 3,500/mm3 Absolute neutrophil count at least 1,800/mm3 Platelet count at least 125,000/mm3 Hemoglobin at least 9 g/dL (transfusion allowed) Hepatic: Bilirubin less than 1.5 mg/dL SGOT less than 2.0 times upper limit of normal Renal: Creatinine less than 1.5 mg/dL OR Creatinine clearance greater than 70 mL/min Cardiovascular: No uncontrolled arrhythmias or conduction defects No unstable or newly diagnosed angina pectoris No New York Heart Association class II-IV heart disease No congestive heart failure No major problems with edema (e.g., severe Cushing's syndrome, residual leg swelling from deep-vein thrombosis) No recent coronary artery disease No poorly controlled hypertension (diastolic greater than 110 mmHg and systolic greater than 180 mmHg) Pulmonary: DLCO greater than 80% of expected value Other: HIV negative No major psychiatric illness No other prior malignancy except adequately treated basal cell or squamous cell skin cancer, in situ cervical cancer, adequately treated stage I or II cancer from which the patient is currently in complete remission, or any other cancer from which the patient has been free of disease for 5 years Not pregnant or nursing Adequate contraception required of all fertile patients