DiscussionThe advent of antenatal and neonatal ultrasonography has resulted in a more frequent diagnosis of UPJO [3, 25, 31].More than three decades of controversy about indicationsfor surgical treatment of neonatally detected UPJO goes on.Indeed, although the management paradigm shifted gradually from early surgery to a more conservative approach, implying active surveillance, the postnatal management of neonatal diagnosed UPJO remains controversial [18, 21]. Whilesurgery is absolutely indicated in symptomatic patients, a