“…On the other hand, several disadvantages of LP have been pointed out in different reports. The disadvantage of LP is that operative times are significantly higher than open pyeloplasty 11,12 . In particular, laparoscopic suturing particularly for children is challenging and time-consuming and requires a learning curve 11 , however, it significantly improved, even with pediatric LP, with increased experience in previous reports 11,13 .Open pyeloplasty is performed through the retroperitoneal approach, which has the advantage of less risk of intraperitoneal organ injury, postoperative ileus, and avoidance of potential deleterious effects of peritoneal exposure to blood and urine.…”