We aimed to determine the impact of de novo vesicoureteral reflux (VUR) on postoperative urinary tract infection (UTI) and renal function in pediatric patients with ureteroceles.

We retrospectively reviewed the medical records of 34 patients (36 renal units) with ureteroceles that were treated endoscopically. Perioperative radiologic and clinical data regarding de novo VUR, UTI, and renal function were analyzed. Logistic regression analysis was used to identify factors that predicted unfavorable surgical outcomes, such as primary surgical failure, postoperative UTI, and deterioration of renal function.

Of the 36 renal units, 22 had a duplex system (61.1%). Preoperative VUR was noted in 9 units (25.0%), including 3 units without renal duplication. Endoscopic surgery successfully decompressed the ureterocele and hydronephrosis in 28 units (77.8%). De novo VUR developed in 18 renal units (50.0%) postoperatively. The absence or presence of de novo VUR was not related to unfavorable surgical outcomes in univariate or multivariate analyses. Even after selection for the 28 renal units without preoperative VUR, the occurrence of de novo VUR had no predictive value for unfavorable surgical outcomes. Moreover, among the 14 renal units without renal duplication, de novo VUR had no predictive value for any of these adverse outcomes.

After endoscopic ureterocele puncture, de novo VUR is not significantly associated with postoperative UTI or deterioration in renal function in the long term. It may not, therefore, be necessary to reconstruct lower urinary tract routinely to correct de novo VUR after endoscopic puncture of the ureterocele.

Investigative and clinical urology. 2019 Jun 21 [Epub]

Sang Hoon Song, Dong Hyun Lee, Hwiwoo Kim, Jongpil Lee, Sangmin Lee, Donghyun Ahn, Sungchan Park, Kun Suk Kim

Department of Urology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea., Department of Urology, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea.