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Urinary Tract Calculi VI: Surgical Management01:25

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Related Experiment Video

Updated: May 30, 2026

Transmesenteric Laparoscopic Pyeloplasty in Trendelenburg Position for Horseshoe Kidney with Hydronephrosis
03:57

Transmesenteric Laparoscopic Pyeloplasty in Trendelenburg Position for Horseshoe Kidney with Hydronephrosis

Published on: July 8, 2025

One-trocar-assisted pyeloplasty.

Maria Grazia Scuderi1, Salvatore Arena, Vincenzo Di Benedetto

  • 1Department of Pediatric Surgery, Unit of Pediatric Surgery, University of Catania, Italy. mgsuderi@gmail.com

Journal of Laparoendoscopic & Advanced Surgical Techniques. Part A
|July 23, 2011
PubMed
Summary
This summary is machine-generated.

One-trocar-assisted pyeloplasty (OTAP) is a safe and effective surgical technique for ureteropelvic junction obstruction in children of all ages. This innovative approach demonstrates successful outcomes with short recovery times.

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Area of Science:

  • Pediatric Surgery
  • Urology
  • Minimally Invasive Surgery

Background:

  • Ureteropelvic junction (UPJ) obstruction is a common cause of hydronephrosis in children.
  • Traditional surgical correction often involves open procedures or more extensive laparoscopic techniques.
  • One-trocar-assisted pyeloplasty (OTAP) offers a novel, less invasive alternative.

Purpose of the Study:

  • To present the authors' experience with the one-trocar-assisted pyeloplasty (OTAP) technique.
  • To evaluate the safety and efficacy of OTAP in pediatric patients with UPJ obstruction.
  • To highlight OTAP as an innovative surgical approach in pediatric urology.

Main Methods:

  • A retrospective review of 39 pediatric patients (27 males, 12 females) who underwent OTAP between October 2005 and December 2009.
  • Patients ranged in age from 1.5 months to 18 years, with 18 under one year old.
  • The procedure involved laparoscopic identification and dissection of the pyeloureteral junction (PUJ) via a single trocar, followed by an open anastomosis.

Main Results:

  • All 39 patients successfully underwent OTAP with no complications.
  • Aberrant crossing vessels were identified in 8 patients.
  • Mean operative time was 78 minutes, mean hospital stay was 2.5 days, and all patients returned to full activity within 7 days.
  • Mean follow-up of 24 months showed all patients remained asymptomatic.

Conclusions:

  • OTAP is a safe and effective innovative technique for treating UPJ obstruction in pediatric patients across all age groups.
  • The procedure is associated with minimal invasiveness, short hospital stays, and excellent clinical outcomes.
  • Successful application of OTAP requires significant surgical experience.