Oncologic Outcomes of Intracorporeal vs Extracorporeal Urinary Diversion After Robot-Assisted Radical Cystectomy: A Multi-Institutional Korean Study

We aimed to compare the oncologic outcomes of intracorporeal urinary diversion (ICUD) and extracorporeal urinary diversion (ECUD) following robot-assisted radical cystectomy (RARC) in patients diagnosed with bladder cancer. Medical records of 730 patients who underwent RARC between April 2007 and May 2019 in 11 tertiary referral centers were retrospectively reviewed. We assessed recurrence-free survival (RFS), cancer-specific survival (CSS), and overall survival (OS) in the two groups using the Kaplan-Meier method. Cox regression models were used to identify factors associated with RFS, CSS, and OS. Among 591 patients, neobladder diversion was performed more frequently in the ICUD group (70.8% 52.5%, = 0.001). The median follow-up duration was shorter in the ICUD group than in the ECUD group (16 26 months,