PATIENT CHARACTERISTICS: Age: 18 and over Performance status: ECOG 0-2 Hematopoietic: WBC at least 3,000/mm3 Platelet count at least 100,000/mm3 Hematocrit at least 30% Hepatic: Bilirubin less than 2.0 mg/dL PT and PTT normal Renal: Creatinine less than 2.0 mg/dL Cardiovascular: No myocardial infarction within the past 6 months No congestive heart failure requiring medication Pulmonary: Respiratory reserve must be reasonable No requirement for supplemental oxygen No dyspnea at rest