In 3 years from December 31st 2016 to October 31st 2019, one hundred and thirty one (131) patients suffering from bladder cancer with indication of radical cystectomy had transurethral resection of bladder tumor (TURBT) for diagnosis followed by robot-assisted radical cystectomy and simple urinary diversion or extracorporeal or intracorporeal orthotopic ileal neobladder using the robot da Vinci™ Si system with 4th arm.