PATIENT CHARACTERISTICS: Age: Under 76 Performance status: WHO 0-2 Life expectancy: Not specified Hematopoietic: WBC at least 4,000/mm3 Platelet count at least 100,000/mm3 Hemoglobin at least 11 g/dL Hepatic: Not specified Renal: See Disease Characteristics Creatinine clearance greater than 50 mL/min Cardiovascular: No progressive ischemic cardiopathy Other: No reduced bladder capacity No prior or concurrent malignancy except basal cell carcinoma or carcinoma in situ of the cervix treated by hysterectomy