PATIENT CHARACTERISTICS: Age: 18 and over Performance status: Karnofsky 70-100% Life expectancy: At least 6 months Hematopoietic: Granulocyte count at least 1,500/mm3 Platelet count at least 75,000/mm3 No known bleeding disorder Hepatic: Bilirubin no greater than 2 times normal No end stage liver disease PT and PTT no greater than 1.5 times normal Renal: Creatinine less than 2 times normal No end stage renal disease Cardiovascular: No unstable angina Pulmonary: No severe oxygen dependent chronic obstructive pulmonary disease Other: No other malignancy known to be active within the past 5 years except basal or squamous cell skin cancer outside the planned radiation portals or carcinoma in situ of the cervix No other life threatening illness Not pregnant or nursing Negative pregnancy test Fertile patients must use effective contraception