PATIENT CHARACTERISTICS: Age: 18 and over Performance Status: Karnofsky greater than 60 Life Expectancy: Not specified Hematopoietic: ANC greater than 2,000 Platelet count greater than 100,000 Hepatic: Not specified Renal: Creatinine clearance greater than 50 mL/min Cardiovascular: Not specified Other: Not pregnant or nursing No adverse medical illnesses No imaging studies performed greater than one month preregistration No laboratory studies greater than 2 weeks preregistration No other malignancies, except for basal or squamous cell of the skin, within the past 5 years