PATIENT CHARACTERISTICS: Age: 18 and over Performance status: ECOG 0-1 Life expectancy: Not specified Hematopoietic: Granulocyte count at least 1,500/mm3 Platelet count at least 100,000/mm3 Hepatic: Bilirubin no greater 1.5 mg/dL SGOT no greater than 2 times upper limit of normal (ULN) Renal: Creatinine no greater than ULN Cardiovascular: No active cardiac disease No unstable angina No myocardial infarction within 6 months No congestive heart failure No inability to tolerate hypotension Other: Not pregnant or nursing Fertile patients must use effective contraception HIV negative No uncontrolled diabetes mellitus No psychiatric disorders No concurrent secondary malignancies except nonmelanomatous skin cancer or patients with less than a 30% risk of relapse