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Ureteral dilation recovery after intravesical reimplantation in children with primary obstructive megaureter

Yan He1, Xuemin Wu1, Yingrui Xu1

  • 1Department of Pediatric Surgery, Shandong Provincial Hospital, Shandong University, Jinan, China.

Frontiers in Pediatrics
|July 10, 2023
PubMed

Insights

Ureteral dilation in primary obstructive megaureter typically resolves within six months after ureteral reimplantation. Bilateral reimplantation is a risk factor for delayed recovery of ureter diameter.

Area of Science:

  • Pediatric Urology
  • Surgical Outcomes
  • Ureteral Reconstruction

Background:

  • Primary obstructive megaureter (POM) is a congenital condition affecting the ureter.
  • Ureteral reimplantation is a common surgical treatment for POM.
  • Postoperative recovery and factors influencing ureter diameter resolution require investigation.

Purpose of the Study:

  • To assess the postoperative recovery of ureteral diameter after ureteral reimplantation in patients with POM.
  • To identify risk factors associated with delayed ureter diameter resolution.

Main Methods:

  • Retrospective analysis of 49 patients (54 ureters) undergoing Cohen ureteral reimplantation for POM.
  • Evaluation of patient characteristics, perioperative parameters, and postoperative outcomes.
  • Definition of normal ureter diameter as <7 mm; survival time analyzed from surgery to recovery or last follow-up.

Main Results:

  • Ureteral diameter normalized in 87.04% of cases, with most resolutions occurring within 6 months.
  • Univariate analysis identified bilateral reimplantation, ureteral tapering, weight, and age as associated with recovery time.
  • Multivariate analysis revealed bilateral reimplantation as a significant risk factor for delayed recovery (HR=0.336, p=0.017).

Conclusions:

  • Ureteral dilation in POM generally resolves within six months post-ureteral reimplantation.
  • Bilateral ureterovesical reimplantation is a key risk factor for delayed ureteral diameter recovery in POM patients.
Abstract

Keywords:
Cohenintravesical reimplantationpneumovesicumprimary obstructive megaureterureteral dilation

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