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Updated: Jul 24, 2025

Assessing Urinary Tract Junction Obstruction Defects by Methylene Blue Dye Injection
Published on: October 12, 2017
Bilateral proximal ureteral and ureterovesical junction obstruction in a child
Daniel A Reich1, Christopher E Bayne2, Cynthia A Sharadin2,3
1University of Florida, College of Medicine, 1600 SW Archer Rd, Gainesville, FL, 32610, USA.
Insights
This case report details a rare instance of bilateral ureteral obstruction in a child, affecting both the ureteropelvic junction (UPJ) and ureterovesical junction (UVJ). It highlights the necessity of combined surgical interventions for such complex pediatric urinary tract obstructions.
Area of Science:
- Pediatric Urology
- Surgical Innovation
- Congenital Anomalies
Background:
- Ureteral obstruction in children commonly occurs at the ureteropelvic junction (UPJ) and ureterovesical junction (UVJ).
- Bilateral hydronephrosis due to UPJ or UVJ obstruction often resolves spontaneously.
- Clinically significant, simultaneous ipsilateral UPJ and UVJ obstruction is infrequent.
Abstract:
The most common sites of ureteral obstruction in children are at the level of the ureteropelvic junction (UPJ) and ureterovesical junction (UVJ). Bilateral hydronephrosis or hydroureteronephrosis due to varying degrees of obstruction at the UPJ or UVJ is common in children and typically improves with time. Clinically significant obstruction at both locations in an ipsilateral ureter occurs less commonly and rarely requires both dismembered pyeloplasty and ureteral reimplantation. We believe this case report is the first description of bilateral proximal and distal ureteral obstruction requiring both dismembered pyeloplasty and ureteral reimplantation.
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