Urinary Diversion With or Without Concomitant Cystectomy for Benign Conditions: A Comparative Morbidity Assessment According to the Updated European Association of Urology Guidelines on Reporting and Grading of Complications.

Background: Evidence is scarce on morbidity after urinary diversion ± cystectomy as treatment for benign bladder indications.

Objective: To conduct a morbidity assessment and to evaluate the impact of concomitant subtrigonal cystectomy (SC) versus urinary diversion (UD) alone.

Design, Setting, And Participants: This was a retrospective study of 97 patients with benign bladder conditions between 2009 and 2017.

Intervention: Open UD and/or concomitant SC.

Outcome Measurements And Statistical Analysis: Data for 30-d complications were extracted using a procedure-specific catalog and were graded according to the Clavien-Dindo classification (CDC), and Comprehensive Complication Index (CCI) values were calculated. Traditional morbidity endpoints focused on the comparative morbidity of UD + SC versus UD alone. Multivariable regressions were computed to evaluate the impact of SC versus UD alone on cumulative morbidity. Subgroup analyses were repeated for patients with previous irradiation.

Results And Limitations: Of 97 patients, 46 (47%) underwent UD + SC and 51 (53%) underwent UD alone. Forty-nine patients (51%) had a history of abdominopelvic radiotherapy. Overall, 69 (71%) patients underwent continent UD and 26 (27%) underwent a Mitrofanoff procedure. We registered 390 complications in 97 (100%) patients, the majority of which were classified as minor (CDC grade ≤IIIa; 93%). Overall, three patients (3.1%) were readmitted and no patient died within 30 d. On multivariable analyses, neither concomitant SC nor previous radiotherapy was associated with higher cumulative morbidity (all p = 0.2). Similarly, concomitant SC was not predictive of a higher complication burden in the irradiation subgroup (all p ≥ 0.05). Limitations include heterogeneity for indications and a lack of information on the radiation dose and field.

Conclusions: In a high-volume referral center, neither SC nor abdominopelvic radiotherapy increased perioperative cumulative morbidity for patients with benign bladder conditions undergoing UD. This is particularly relevant for patients who would benefit from concomitant SC to avert adverse sequelae related to the retained bladder.

Patient Summary: Urinary diversion (UD) is a surgical procedure to create a new way for urine to exit the body. We found that among patients undergoing UD for benign bladder conditions, those who also have their bladder removed and patients who have received previous radiotherapy do not experience more complications.