PATIENT CHARACTERISTICS: Age: 80 and under Performance status: Karnofsky 60-100% Zubrod 0-2 Life expectancy: At least 2 months Hematopoietic: Granulocytopenia, anemia, and/or thrombocytopenia allowed Hepatic: Bilirubin no greater than 1.5 times upper limit of normal (ULN) SGOT or SGPT less than 2.5 times ULN Renal: Creatinine no greater than 1.5 times ULN OR Creatinine clearance or radioisotope GFR at least 70 mL/min Cardiovascular: Shortening fraction at least 27% by echocardiogram OR Cardiac ejection fraction greater than 50% by echocardiogram or gaited radionuclide Pulmonary: No dyspnea at rest No exercise intolerance No clinical evidence of significant restrictive pulmonary disease Pulse oximetry greater than 94% FEV1 or FVC greater than 60% DLCO at least 65 Other: Not pregnant or nursing Negative pregnancy test Fertile patients must use effective contraception during and for 2 months after study HIV negative No uncontrolled diabetes mellitus No other serious uncontrolled medical condition No active uncontrolled infection requiring systemic antibiotics or antifungal medications Prior CNS toxicity no greater than grade 1