PRIOR CONCURRENT THERAPY: Recovered from all prior therapies Biologic therapy: No prior biologic response modifier therapy No filgrastim (G-CSF) 24 hours pre- or post-chemotherapy administration Chemotherapy: No prior systemic chemotherapy Endocrine therapy: Not specified Radiotherapy: No prior radiotherapy as a component of bladder sparing therapy No prior adjuvant radiotherapy for locally advanced disease with positive margins Surgery: See Disease Characteristics Other: Prior intravesical therapy for superficial bladder cancer allowed and recovered