PATIENT CHARACTERISTICS: Age: 18 to 70 Performance status: ECOG 0-2 Life expectancy: Not specified Hematopoietic: See Disease Characteristics Hepatic: Bilirubin no greater than 1.5 times upper limit of normal (ULN) SGOT and SGPT no greater than 1.5 times (ULN) INR and PTT no greater than 1.5 times ULN Renal: Creatinine no greater than 1.5 times ULN Cardiovascular: No angina No New York Heart Association class III or IV heart disease Other: No uncontrolled medical disease, such as diabetes mellitus, thyroid dysfunction, neuropsychiatric disorders, or infection HIV negative Not pregnant or nursing Negative pregnancy test Fertile patients must use effective barrier contraception No other malignancy within the past 5 years except basal cell skin cancer or carcinoma in situ of the cervix No history of noncompliance with medical regimens or potential for noncompliance