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Updated: Feb 22, 2026

Vessel-sparing Excision and Primary Anastomosis
Published on: January 7, 2019
Endoscopic injection for primary vesicoureteric reflux: Predictors of resolution and long term efficacy
Ling Leung1, Ivy Hau Yee Chan1, Patrick Ho Yu Chung1
1Division of Paediatric Surgery, Department of Surgery, The University of Hong Kong, Queen Mary Hospital, Hong Kong.
Aim:
We investigated the efficacy of endoscopic-Deflux-injection in treating primary-vesicoureteric-reflux (VUR) and identified factors to predict resolution.
Materials And Methods:
Records of children treated with Deflux for primary-VUR from 1995 to 2016 were reviewed, and outcomes were investigated.
Results:
Eighty-eight ureters (35 bilateral, 18 unilateral) in 53 children underwent 124 injections. Thirty-five (66%) patients had single injection (13 unilateral, 22 bilateral). Fifteen (28%), two (37%), and one (2%) patients had two, three, and four injections, respectively. Overall success rate by ureters was 57% after single injection. Complete resolution occurred in 65% of ureters with VUR below grade III, 63% of grade III, 40% of grade IV, and 70% of grade V VUR. Four patients had reimplantation. The median follow up duration was 60months (range 20-216months). Univariate analysis showed that lower VUR grade (p=0.03) and absent renal scars (p=0.04) were statistically significant predictors of resolution. In multivariate analysis, absent renal scars were statistically significant (p=0.01).
Conclusion:
We demonstrated efficacy of endoscopic-Deflux-injection as the first line treatment for primary-VUR. Absent renal scar and lower VUR grade were statistically significant predictors of resolution after single injection.
Type Of Study:
Case-Control / Retrospective Comparative Study.
Level Of Evidence:
Level III.
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