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Updated: Aug 9, 2026

Assessing Urinary Tract Junction Obstruction Defects by Methylene Blue Dye Injection
Published on: October 12, 2017
[Specificities of the treatment of abnormal pyelo-ureteral junction in children]
G Audry1, P De Vries, A Bonnard
1Service de chirurgie viscérale infantile, Hôpital d'enfants Armand Trousseau, 26, avenue du Docteur Arnold-Netter, 75571 Paris 12, France. georges.audry@trs.ap-hop-paris.fr
Insights
Pediatric pyeloplasty for ureteropelvic junction obstruction is common in infants. Surgical approaches and drain choices like nephrostomy or double J drains are debated, with laparoscopic and endopyelotomy options for specific cases.
Area of Science:
- Pediatric Urology
- Surgical Innovation
- Congenital Abnormalities
Context:
- Prenatal ultrasound frequently detects ureteropelvic junction (UPJ) abnormalities in children.
- Pyeloplasty, a common procedure for UPJ obstruction, is typically performed on young infants.
- The posterior approach with the patient prone is the usual surgical position.
Purpose:
- To review current practices and ongoing debates in the surgical management of pediatric ureteropelvic junction obstruction.
- To discuss the indications and efficacy of different urinary pyelic drain types.
- To explore alternative surgical techniques for specific scenarios.
Summary:
- Resection-anastomosis pyeloplasty is the standard for UPJ obstruction in infants.
- The choice between simple nephrostomy and double J drain for urinary drainage remains a point of discussion.
- Ureteral-caliceal anastomosis is valuable for complex reoperations, especially with significant pyelocaliceal dilation.
- Laparoscopic surgery is beneficial for older children, while endopyelotomy shows promise for postoperative strictures.
Impact:
- Highlights the ongoing considerations in pediatric UPJ obstruction management.
- Provides insights into the comparative effectiveness of various surgical techniques and drainage methods.
- Informs clinical decision-making for pediatric urologists managing UPJ abnormalities.
Abstract:
Pyelo-ureteral junction abnormalities in children are most frequently discovered by prenatal ultrasound investigation. Most pyeloplasties by resection-anastomosis of the pyelo-ureteral junction are performed in young infants, usually with a posterior approach, patient prone. The indication and type of urinary pyelic drain remain debated: simple nephrostomy or double J drain. Ureteral-caliceal anastomosis is an interesting approach to rare surgical reoperations, particularly with major pyelo-ureteral dilatation. Laparoscopic surgery may prove usefulness in less small children. Endopyelotomy gives good results for post-operative stenoses.
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