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Transmesenteric Laparoscopic Pyeloplasty in Trendelenburg Position for Horseshoe Kidney with Hydronephrosis
Published on: July 8, 2025
Lessons from 90 consecutive laparoscopic dismembered pyeloplasties in a residency program
Marco Antonio Arap1, Fabio Cesar Miranda Torricelli, Anuar Ibrahim Mitre
1Division of Urology, Department of Surgery, Hospital das Clínicas, University of São Paulo Medical School, São Paulo, Brazil. marcoarap@hotmail.com
Scandinavian Journal of Urology
|November 16, 2012
Summary
Laparoscopic pyeloplasty is a safe and effective treatment for ureteropelvic junction obstruction. This study shows high success rates and low complication rates in 90 patients, even when performed by residents.
Area of Science:
- Urology
- Minimally Invasive Surgery
- Surgical Outcomes
Background:
- Ureteropelvic junction obstruction is a common cause of flank pain and infection.
- Traditional open pyeloplasty can be associated with significant morbidity.
- Laparoscopic pyeloplasty offers a minimally invasive alternative.
Purpose of the Study:
- To evaluate the safety and efficacy of laparoscopic pyeloplasty.
- To report outcomes of 90 consecutive cases performed at a university hospital.
- To assess complication rates and success in a residency training setting.
Main Methods:
- Retrospective review of 90 transperitoneal dismembered pyeloplasties performed between 2004 and 2010.
- All cases were for symptomatic ureteropelvic junction obstruction.
- Laparoscopic Anderson-Hynes technique with routine double-J stent placement was used.
Main Results:
- Mean operative time was 222.5 minutes.
- 96.6% of cases were completed laparoscopically; 3.3% required conversion.
- Major complications occurred in 4.4% of patients, with 87.3% showing symptomatic improvement at follow-up.
Conclusions:
- Laparoscopic pyeloplasty is a feasible procedure.
- High success rates and low complication rates are achievable.
- The technique is suitable for training programs and can be performed safely by residents.

