Objective To compare the recurrence rate and progression rate of transurethral resection of bladder tumor( TURBT) and repeated transurethral resection of bladder tumor( Re-TURBT) with non-muscle invasive bladder cancer. To investigate the risk factors associated with the recurrence and progression of NMIBC,and the impact of different timing of Re-TURBT on the prognosis of patients. Methods Prospective clinical randomized controlled study was conducted. 95 cases of NMIBC patients were analyzed. According to ...