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Transmesenteric Laparoscopic Pyeloplasty in Trendelenburg Position for Horseshoe Kidney with Hydronephrosis
Published on: July 8, 2025
Transmesocolic robot-assisted pyeloplasty: single center experience
Narmada P Gupta1, Satyadip Mukherjee, Rishi Nayyar
1Department of Urology, All India Institute of Medical Sciences, New Delhi, India. narmadagupta@gmail.com
Journal of Endourology
|May 29, 2009
Summary
The transmesocolic approach for robotic pyeloplasty is technically feasible for left ureteropelvic junction obstruction (UPJO). This minimally invasive technique offers safe and effective treatment with durable success rates comparable to open surgery.
Area of Science:
- Urology
- Minimally Invasive Surgery
- Robotic Surgery
Background:
- Ureteropelvic junction obstruction (UPJO) is a common cause of pediatric and adult kidney disease.
- Traditional open pyeloplasty can involve significant patient morbidity.
- Robotic-assisted pyeloplasty offers potential advantages in terms of precision and recovery.
Purpose of the Study:
- To evaluate the technical feasibility and outcomes of the transmesocolic approach for robotic pyeloplasty in patients with left UPJO.
- To assess the safety and efficacy of this specific surgical technique.
Main Methods:
- A retrospective review of 60 robot-assisted pyeloplasty cases was conducted.
- The transmesocolic approach was utilized in 24 of 27 left-sided UPJO cases.
- All procedures involved a pure robot-assisted dismembered reduction pyeloplasty.
Main Results:
- The mean operative time was 125.33 minutes with an average blood loss of 38.7 mL.
- Average hospital stay was 2.5 days, with drains removed within 48 hours in most cases.
- No patient showed clinical or radiographic evidence of recurrent obstruction after a 1-year follow-up.
Conclusions:
- The transmesocolic approach is a safe and feasible technique for robotic pyeloplasty in select patients with left UPJO.
- This method avoids extensive colon mobilization and allows direct access to the UPJO.
- The technique demonstrates high effectiveness and durable success rates similar to open surgery.

