PATIENT CHARACTERISTICS: Age: Not specified Performance status: Karnofsky 70-100% Life expectancy: Not specified Hematopoietic: Absolute neutrophil count at least 1,500/mm3 Platelet count at least 100,000/mm3 Hepatic: Bilirubin normal ALT/AST no greater than 2.5 times upper limit of normal (ULN) Renal: Creatinine no greater than 1.5 times ULN (1.95 mg/dL at MSKCC) OR Creatinine clearance at least 50 mL/min Cardiovascular: No New York Heart Association class III or IV congestive heart failure No ECG evidence of acute ischemia No significant conduction abnormality (e.g., bifascicular block, 2nd or 3rd degree AV blocks) Other: Not pregnant or nursing Negative pregnancy test Fertile patients must use effective contraception No other malignancy within the past 5 years and deemed low risk for recurrence No other concurrent clinical circumstances that would compromise safety or integrity of trial