En Bloc Versus Conventional Transurethral Resection of Bladder Tumors: A Single-center Prospective Randomized Noninferiority Trial

This randomized controlled trial is the highest-evidence study to date on en bloc resection of bladder tumor (ERBT). ERBT was noninferior to the conventional transurethral resection technique in the staging of bladder cancer. The rate of T1 substaging feasibility was significantly higher in the ERBT group. Intraoperative and postoperative outcomes were comparable between the groups, and oncological outcomes were comparable at median follow-up of 15 mo.