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Updated: Apr 17, 2026

Vessel-sparing Excision and Primary Anastomosis
Published on: January 7, 2019
Can distal ureteral diameter predict reflux resolution after endoscopic injection?
Tamer Helmy1, Doaa Sharaf1, Ahmed AbdelHalim1
1Pediatric Urology Department, Urology and Nephrology Center, Mansoura University, Mansoura, Egypt.
The ureteral diameter ratio (UDR) can predict successful endoscopic treatment for primary vesicoureteral reflux (VUR) in children. This objective measurement aids in determining treatment outcomes for VUR.
Area of Science:
- Pediatric Urology
- Medical Imaging
- Surgical Outcomes
Background:
- Primary vesicoureteral reflux (VUR) is common in children.
- Endoscopic injection is a standard VUR treatment.
- Predicting treatment success is crucial for patient management.
Purpose of the Study:
- To evaluate the predictive value of distal ureteral diameter (UD) for reflux resolution after endoscopic injection in children with primary VUR.
- To establish an objective measurement for predicting treatment success.
Main Methods:
- Retrospective review of 70 children with primary VUR treated with endoscopic injection (2009-2012).
- Measurement of distal UD and calculation of the UD ratio (UDR) from voiding cystourethrograms.
- Logistic regression analysis to assess UD and UDR as predictors of reflux resolution.
Main Results:
- UD and UDR were significant predictors of reflux resolution (P < .007 and P = .001, respectively).
- Mean UD was 5.5 mm and mean UDR was 37.8%.
- No postoperative complications were observed.
Conclusions:
- The ureteral diameter ratio (UDR) offers an objective metric for VUR.
- UDR serves as a valuable predictive tool for the success of endoscopic injection therapy in pediatric VUR.
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