COMPARATIVE STUDY
JOURNAL ARTICLE
MULTICENTER STUDY
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Minimally Invasive Dismembered Extravesical Cross-Trigonal Ureteral Reimplantation for Obstructed Megaureter: A Multi-Institutional Study Comparing Robotic and Laparoscopic Approaches.

Urology 2021 March
OBJECTIVE: To compare 2 minimally invasive surgical options for the treatment of obstructed megaureter: robot assisted dismembered extravesical cross-trigonal ureteral reimplantation (RADECUR) and laparoscopic dismembered extravesical cross-trigonal ureteral reimplantation (LDECUR).

METHODS: A 2 arm retrospective comparative study, including all pediatric patients who underwent ureteral reimplantation of unilateral obstructed megaureter, either by RADECUR or LDECUR. Patient demographics, perioperative surgical data, complications, and results are described. The surgical technique in both arms was similar: dismembering of the ureter, performing an extravesical cross-trigonal detrusorotomy, and intracorporeal tailoring of the ureter when indicated, were the pivotal maneuvers utilized.

RESULTS: The study included 95 patients (48 and 47 in the RADECUR and LDECUR arms, respectively) operated between the years 2016 and 2019. Overall, median age at surgery was 24 months (IQR 12-48) and median weight was 14 kg (IQR 11-21). Median operative time was 93 minutes (IQR 90-120) for RADECUR and 130 minutes (IQR 105-160) for LDECUR (P< 0.001). Intracorporeal excisional tapering was performed in 11 of the RADECUR patients and 19 LDECUR patients. Grade 1-2 Clavien-Dindo complications occurred in 7 patients, and grade 3 complication in 1 patient in the RADECUR arm. In the LDECUR arm, grade 1-2 complications occurred in 2 patients, and 2 had a grade 3 complications. Surgical success was achieved in 97% and 94% in the RADECUR and LDECUR groups, respectively.

CONCLUSION: Unilateral robotic extravesical cross-trigonal ureteral re-implantation for treatment of obstructed megaureter in the pediatric population is safe and effective both for RADECUR and LDECUR. Operative time is significantly shorter for RADECUR.

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