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The introduction and widespread use of antenatal ultrasonography has increased the diagnosis of fetal hydronephrosis in utero[1-3]. Antenatal ultrasound screening detects fetal hydronephrosis in around 1% of fetuses[1,4]. One of the most common causes of antenatally diagnosed hydronephrosis is ureteropelvic junction obstruction (UPJO)[3] . Here we report a neonate of 20days old with antenatally diagnosed bilateral hydronephrosis, who subsequently underwent bilateral open pyeloplasty with dj stenting.