Treatment of Ureteropelvic Junction Obstruction in Children Jianghua Jia Qingsong Meng Ming Zhang Jinchun Qi Dongbin Wang The Second Hospital of Hebei Medical University Keywords: Retroperitoneoscopic pyeloplasty, Open pyeloplasty, Ureteropelvic junction obstruction, Children Abstract Objectives: To compare the therapeutic effect of retroperitoneoscopic dismembered pyeloplasty and open ureteropelvic junction plasty on the ureteropelvic junction obstruction (UPJO) in children. Methods: After...