En Bloc Resection for Bladder Tumors: An Updated Systematic Review and Meta-Analysis of Its Differential Effect on Safety, Recurrence and Histopathology

PURPOSE: resection for nonmuscle-invasive bladder cancer. MATERIALS AND METHODS: resection with conventional transurethral resection of bladder tumors. RESULTS: resection had a lower rate of residual tumor at repeat transurethral resection than those treated with conventional transurethral resection of bladder tumors in 1 randomized controlled trial and 3 observational studies (pooled RR 0.47, 95% CI 0.31-0.71). CONCLUSIONS: resection for bladder tumors seems to be safer, and to yield superior histopathological information and performance compared to conventional transurethral resection of bladder tumors. Despite the failure to improve the recurrence rate, the more accurate histopathological analysis is likely to improve clinical decision making and care delivery in nonmuscle-invasive bladder cancer.