Stratifying risk for multiple, recurrent, and large (≥3 cm) Ta, G1/G2 tumors in non-muscle-invasive bladder cancer

The current stratification of risk groups regarding recurrence and progression of non-muscle-invasive bladder cancer (NMIBC) is problematic. We aimed to assess the long-term outcome and risk of multiple, recurrent, and large (≥3 cm) Ta, G1/G2 tumors after transurethral resection of the bladder tumor (TURBT).We categorized 1,621 patients with NMIBC who underwent TURBT into four risk groups according to the European Association of Urology (EAU)...