WOFAPS 2025 8th World Congress of Pediatric Surgery

Jacqueline Olmedo ¹, Pablo Guaman-Ludeña ², Yolanda Galvez ², Paul Astudillo-Neira ²

¹ San Francisco de Quito, University
² Carlos Andrade Marin Hospital, Department of Pediatric Surgery

OBJECTIVE
To evaluate the outcomes of surgical treatment for ureteropelvic junction (UPJ) obstruction in pediatric patients at a tertiary referral hospital in Ecuador.

METHODS
We conducted a retrospective review of medical records for pediatric patients diagnosed with UPJ obstruction who underwent surgical treatment between 2014 and 2025 in our institution.

RESULTS
A total of 47 patients underwent surgery during the study period. Of these, 20 patients (42.5%) were treated with the traditional Anderson-Hynes pyeloplasty, 4 patients (8.5%) with a laparoscopic approach, and 23 patients (48.9%) with a robotic-assisted pyeloplasty. The mean operative time was: 107 minutes for the traditional technique (range: 70–185 min), 156 minutes for the laparoscopic approach (range: 150–167 min), 108 minutes for the robotic-assisted procedure (range: 55–183 min).

The hospital stay was shortest for the robotic-assisted group (2.6 days), compared to 4.3 days for the traditional group and 4.7 days for the laparoscopic group. Each surgical group reported only one postoperative complication.

Follow-up renal scintigraphy revealed a non-obstructive pattern in: 75% of traditional cases, 50% of laparoscopic cases, 90% of robotic-assisted cases

CONCLUSIONS
The Anderson-Hynes pyeloplasty remains a reliable treatment for UPJ obstruction. Although the sample size was limited, our findings suggest that minimally invasive approaches, particularly robotic-assisted pyeloplasty, are safe and offer outcomes comparable to or better than traditional surgery in terms of hospitalization time and postoperative renal drainage.