Endoscopic balloon dilatation in primary obstructive megaureter: Long-term results

Balloon dilation can be a safe and effective endoscopic procedure for the treatment of primary obstructive megaureter in infants, and has shown good outcomes in long-term follow-up. More studies are needed to demonstrate these results.Summary table. Preoperative and postoperative renal findings.OutcomesPre-operative6 months after surgeryP-value (Wilcoxon test)Median distal ureter diameter, mm (range)15 (7-22)4 (3-9)P < 0.001Median pelvis diameter, mm (range)20 (13-25)11 (3-15)P < 0.001Median differential renal function MAG-3 renogram, % (range)49.7 (29-58)51 (43-56)P = 0.249T½ MAG-3 renogram, minutes (range)73 (25-150)5.5 (5-20)P < 0.001MAG-3, mercapto-acetyltriglycine.