Related Experiment Video
Updated: Mar 27, 2026
Transmesenteric Laparoscopic Pyeloplasty in Trendelenburg Position for Horseshoe Kidney with Hydronephrosis
Published on: July 8, 2025
A Modified Antegrade Stenting Technique for Laparoscopic Pyeloplasty in Infants and Children
Senad Kalkan1, Cevper Ersöz, Abdullah Armagan
1Department of Urology, Bezmialem Vakif University, Faculty of Medicine, Istanbul, Turkey.
Insights
A new technique for laparoscopic pyeloplasty (LP) in children simplifies stent placement. This modified approach, using an Amplatz dilator and closed-tip stent, proved effective and safe in a pediatric study.
Area of Science:
- Pediatric Urology
- Minimally Invasive Surgery
- Surgical Techniques
Background:
- Laparoscopic pyeloplasty (LP) in children involves critical stent placement steps.
- Challenges include ureteropelvic junction (UPJ) entry and ureterovesical junction (UVJ) passage.
- A modified technique aims to overcome these difficulties.
Purpose of the Study:
- To introduce and evaluate a modified technique for stent placement during pediatric LP.
- To address the challenges of UPJ and UVJ passage during LP.
Main Methods:
- Prospective enrollment of 27 children undergoing transperitoneal LP by a single surgeon.
- Modified technique utilizes an Amplatz dilator and a closed-tip stent for insertion.
- Data collected on stent insertion time, operative time, hospital stay, and follow-up outcomes.
Main Results:
- Mean patient age was 6.7 years (range 4 months-17 years).
- Mean stent insertion time was 2.7 minutes; mean operative time was 128.3 minutes.
- Mean hospital stay was 2.0 days, with no operative failures at a mean follow-up of 20.3 months.
Conclusions:
- The modified technique offers a safe and effective method for stent placement in pediatric LP.
- This approach enhances the current surgical options for LP in infants and children.
- The technique successfully overcomes critical steps in stent insertion during LP.
Objective:
There are 2 critical steps of stent placement during laparoscopic pyeloplasty (LP) in children. Introduction to the ureteropelvic junction and passing through the ureterovesical junction. We aimed at overcoming those 2 steps by creating a modified technique.
Methods:
Consecutive 27 children undergoing transperitoneal laparoscopic dismembered pyeloplasty by a single surgeon were prospectively enrolled into this study. The modifications of our technique are using an Amplatz dilator and a closed tip stent.
Results:
The mean age of the children was 6.7 (range 4 months-17 years). The mean time of stent insertion was 2.7 ± 2.0 (2-6) min and the operative time was 128.3 ± 17.6 (90-180) min. The mean number of days of hospital stay was 2.0 ± 0.4 (1-3). After a mean follow-up period of 20.3 ± 4.2 (14-30) months, no operative failure was detected.
Conclusion:
Our modified technique is a completion of the current armamentarium for stent placement during LP in infants and children.
