Related Experiment Video
Updated: Jul 11, 2026

Assessing Urinary Tract Junction Obstruction Defects by Methylene Blue Dye Injection
Published on: October 12, 2017
[Primary obstructive megaureter- diagnosis and treatment]
S G Aprodu1, B Savu, D G Goţia
1Clinica de Chirurgie şi Ortopedie Pediatrică, Facultatea de Medicină, Universitatea de Medicină şi Farmacie Gr.T. Popa Iaşi.
Insights
This study shows that uretero-vesical reimplantation is effective for primary obstructive megaureter in children. Both Cohen and Leadbetter-Politano techniques achieved good outcomes in most cases.
Area of Science:
- Pediatric Urology
- Surgical Innovation
- Congenital Abnormalities
Background:
- Primary obstructive megaureter (POM) is a congenital condition affecting the ureter.
- It often requires surgical intervention in pediatric cases.
- This study focuses on POM cases without associated vesicoureteric reflux.
Purpose of the Study:
- To evaluate diagnostic and surgical options for primary obstructive megaureter in children.
- To assess the efficacy of different uretero-vesical reimplantation techniques.
- To report outcomes of surgical management for POM without reflux.
Main Methods:
- Retrospective analysis of 13 pediatric cases with primary obstructive megaureter.
- Surgical treatment involving uretero-vesical reimplantation (Cohen and Leadbetter-Politano techniques).
- Ureteric folding was performed in two selected cases.
Main Results:
- Both Cohen and Leadbetter-Politano reimplantation techniques demonstrated success.
- Good final results were reported in 10 out of 13 treated cases.
- Ureteric folding was an adjunct procedure in specific instances.
Conclusions:
- Uretero-vesical reimplantation is a successful surgical approach for pediatric primary obstructive megaureter.
- The choice between Cohen and Leadbetter-Politano techniques can be tailored to patient needs.
- Conservative management with good outcomes is achievable for POM without reflux.
Abstract:
The authors have treated 13 cases of primary obstructive megaureter (POM) in children, presenting without vesicoureteric reflux. The diagnostic possibilities and the surgical approach options are discussed. Both Cohen and Leadbetter--Politano uretero-vesical reimplantation techniques proved to be successful in this series. Ureteric folding was done in 2 cases. Reported final results are good in 10 cases.
Related Concept Videos
Urinary Tract Infection III: Diagnostic Studies and Interprofessional Care
Acute Pyelonephritis II: Diagnostic Studies and Management
Urinary Tract Calculi III: Medical Management
Urinary Tract Calculi V: Nursing Management
Urinary Tract Calculi VI: Surgical Management
Imaging Studies V: Intravenous Urography and Retrograde Pyelography

