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Updated: May 7, 2026

An Immature Murine Model of Reversible Unilateral Ureteral Obstruction
Published on: April 4, 2025
Antegrade balloon dilation of postoperative ureterovesical junction obstruction in children
C A Angel1, J N Kocurek, E M Walser
1Department of Surgery, Division of Pediatric Surgery, The University of Texas Medical Branch, 77555-0353, Galveston, Texas, USA.
Insights
Antegrade balloon dilation (ABD) offers a minimally invasive treatment for ureterovesical junction obstruction following ureteral reimplantation in children. This approach shows promise as a primary therapy, potentially reducing the need for surgical correction.
Area of Science:
- Pediatric Urology
- Minimally Invasive Surgery
- Urological Complications
Background:
- Ureteral reimplantation can lead to ureterovesical junction obstruction, a known complication.
- Traditional treatment involves surgical correction, which can be invasive.
Purpose of the Study:
- To evaluate the efficacy and safety of antegrade balloon dilation (ABD) for treating ureterovesical junction obstruction in children.
- To explore ABD as a potential first-line treatment.
Main Methods:
- Two pediatric patients with post-reimplantation ureteral strictures underwent antegrade balloon dilation (ABD).
- Obstruction was confirmed using diuretic renography and pressure perfusion studies.
- Follow-up included clinical assessment, ultrasonography, and repeat diuretic renograms.
Main Results:
- Ultrasonography demonstrated resolution of hydronephrosis post-ABD.
- Diuretic renograms confirmed complete radiotracer washout, indicating successful obstruction relief.
- Morbidity was minimal, consisting of manageable pyelonephritis episodes.
Conclusions:
- Antegrade balloon dilation (ABD) is a simple, effective, and low-morbidity procedure for distal ureteral obstruction after reimplantation.
- ABD should be considered a primary treatment modality for these specific ureteral strictures.
Abstract:
Obstruction of the ureterovesical junction is an uncommon but well-recognized complication of ureteral reimplantation that traditionally has been treated by surgical correction [1, 5-9]. We report our experience with antegrade balloon dilation (ABD) of these strictures in two children. Obstruction was confirmed by diuretic renogram and pressure perfusion studies prior to ABD. Clinical follow-up was done at 3 months and 14 months, and ultrasonographic studies revealed resolution of the hydronephrosis. In addition, diuretic renograms showed complete washout of radiotracer. Morbidity was limited to episodes of pyelonephritis that readily responded to medical management. ABD of ureteral strictures is a relatively simple procedure with a potential for a high success rate and low morbidity. This modality should be considered as the first line of treatment in patients with distal ureteral obstruction after reimplantation.
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