Carcinoma, Transitional Cell/therapy; Cystectomy/methods; Neoplasm Recurrence, Local; Urinary Bladder Neoplasms/therapy; Adult; Aged; Aged, 80 and over; Analysis of Variance; Carcinoma, Transitional Cell/mortality; Carcinoma, Transitional Cell/pathology; Chemotherapy, Adjuvant; Female; Humans; Hydronephrosis/complications; Lymph Node Excision/methods; Lymph Node Excision/statistics & numerical data; Magnetic Resonance Imaging; Male; Middle Aged; Neoplasm Invasiveness/pathology; Neoplasm Recurrence, Local/diagnosis; Neoplasm Recurrence, Local/mortality; Neoplasm Staging/methods; Neoplasm, Residual; Patient Selection; Pelvic Neoplasms/secondary; Pelvis; Prospective Studies; Radiotherapy, Adjuvant; Risk Assessment; Survival Rate; Tomography, X-Ray Computed; Urinary Bladder Neoplasms/diagnosis; Urinary Bladder Neoplasms/mortality; Urinary Bladder Neoplasms/pathology