PATIENT CHARACTERISTICS: Age: 18 and over Performance status: ECOG 0-2 Life expectancy: Not specified Hematopoietic: Not specified Hepatic: Not specified Renal: Creatinine no greater than 1.5 mg/dL AND/OR Creatinine clearance at least 60 mL/min Calcium no greater than 8.7 g/dL Cardiovascular: No history of arrhythmias No uncontrolled angina pectoris No symptomatic coronary ischemia No grade 3 or 4 congestive heart failure Cardiac ejection fraction greater than 35% by gated imaging Other: Not pregnant or nursing Fertile patients must use effective contraception