PATIENT CHARACTERISTICS: Age: 18 and over Performance status: ECOG 0-2 Life expectancy: At least 3 months Hematopoietic: Absolute neutrophil count at least 1,500/mm3 Platelet count at least 100,000/mm3 Hepatic: Bilirubin less than 1.5 times upper limit of normal (ULN) Alkaline phosphatase no greater than 2.5 times ULN (5 times ULN if liver metastases present) SGOT/SGPT no greater than 2.5 times ULN (5 times ULN if liver metastases present) Renal: Creatinine no greater than 1.7 mg/dL Creatinine clearance at least 60 mL/min Cardiovascular: Clinically normal cardiac function No history of ischemic heart disease No congestive heart failure within the past 6 months Normal 12 lead ECG Other: Not pregnant or nursing Negative pregnancy test Fertile patients must use effective contraception No other prior or concurrent malignancies except cone biopsied carcinoma of the cervix or adequately treated basal or squamous cell skin carcinoma No unstable systemic diseases No active uncontrolled infections No psychological, familial, sociological, or geographical condition that would preclude study compliance and follow-up