Ureteropelvic junction obstruction (UPJO) is a common cause of paediatric hydronephrosis, often requiring pyeloplasty to preserve renal function. A prospective study (July 2023–December 2024) included 28 children (3 months–12 years) with unilateral UPJO undergoing open dismembered pyeloplasty. Preoperative and postoperative assessments used ultrasonography (Society for Foetal Urology SFU grading) and diuretic renography (⁹⁹ TcDTPA) to measure hydronephrosis, glomerular ltration rate (GFR), and differential renal function (DRF). Complications were recorded. Data were analysed using SPSS v27.0 (p<0.05). Of 28 patients (75% male, 71.4% left-sided), 67.9% showed improved renal function and hydronephrosis. Mean SFU grade decreased from 3.07 to 2.14 (30.3%, p<0.001), GFR increased from 30.57 to 32.72 mL/min (7.0%, p=0.049), and DRF improved from 31.76% to 35.61% (12.1%, p<0.001). Complications included urinary tract infection (14.3%), redo pyeloplasty (7.1%), and anastomotic leakage (3.6%). Anderson-Hynes pyeloplasty effectively improves renal function and resolves hydronephrosis in most paediatric UPJO cases, with low complication rates. Early intervention optimizes outcomes
Verma et al. (Mon,) studied this question.