Prog Urol
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To study the diagnostic and outcome aspects of antenatally diagnosed primary megaureters and analyse the results of the postnatal medicochirurgical management. ⋯ Half of our patients with antenatal diagnosis of primary megaureter required surgical correction. Urinary recurring infections, renal functional deterioration less than 20% and importance of ureteral dilatation with vesico-ureteric reflux grade V were predictive factors for surgery.