Retroperitoneal Approach for Ureteropelvic Junction Obstruction: Encouraging Preliminary Results With Robot-Assisted...

Area of Science:

• Pediatric Urology
• Minimally Invasive Surgery
• Robotic Surgery

Background:

• Robot-assisted laparoscopic pyeloplasty (RALP) is increasingly adopted in pediatric urology.
• Limited data exists on the retroperitoneal approach for pediatric RALP.
• This study evaluates the initial 2-year experience with RALP at a multidisciplinary pediatric robotic center.

Purpose of the Study:

• To assess the feasibility, safety, and efficacy of the retroperitoneal approach for RALP in children.
• To analyze surgical outcomes and postoperative courses in pediatric patients undergoing RALP for ureteropelvic junction obstruction.

Main Methods:

• Retrospective analysis of prospectively collected data from 50 children undergoing RALP for ureteropelvic junction obstruction.
• Diagnosis and outcome assessment using ultrasound, Tc-99m mercaptoacetyltriglycine renal scan, or MRI.
• Lateral retroperitoneal approach used in 37 cases; transperitoneal approach for specific complex cases.
• Dismembered pyeloplasty with running absorbable suture and double J stent placement.

Main Results:

• Median age 7.9 years, median weight 23 kg; 18 children had aberrant crossing vessels.
• Median console time was 151 minutes; no conversions to open surgery were required.
• Postoperative complications included urinary tract infections in 6 children; most patients discharged on day one. Median follow-up was 9 months, with no redo pyeloplasties needed.

Conclusions:

• The retroperitoneal approach for RALP in children is feasible, safe, and effective.
• This technique provides excellent anatomical exposure for treating ureteropelvic junction obstruction.
• Continued practice and longer-term follow-up will further refine surgical mastery and outcomes.