Renal malformations represent a large part of the pathology referred to the pediatric surgeon. Most of them are diagnosed during pregnancy. We present one case of complete ureteral duplex with upper pole obstructive megaureter managed in a private hospital using minimally invasive methods for both diagnosis and treatment due to good teamwork. We do not want to demonstrate that other investigations are not leading to the same diagnose, we want to highlight an alternative to the classic approach. We hope that our experience is a starting point for further research and that in future radiation and general anesthesia in children will be avoided as much as possible for renal investigations.