Abstract:Objective To summarize the experience in the diagnosis and treatment of pediatric ureteropelvic junction obstruction.Methods Clinical data from 45 pediatric patients with surgery-confirmed ureteropelvic junction obstruction were retrospectively analyzed.The improvement in postoperative hydronephrosis was followed-up and surgical efficacy was assessed.Results Among the 45 patients who underwent surgical exploration,magnetic resonance urography(MRU) was performed in 18 patients,with a diagnosis rate of 100%.Among the 25 patients who underwent 6 months to 3 years of follow-up examinations with B-mode ultrasound and intravenous pyelography,clinical symptoms disappeared in 24 patients who showed varying degrees of improvement in hydronephrosis and had no re-obstruction,with a surgery success rate of 96%.Conclusion MRU is an ideal imaging examination method and Anderson-Hynes pyeloplasty is the preferred surgical method for pediatric ureteropelvic junction obstruction.