Patient's question:
Is neonatal hydronephrosis serious?Doctor's answer:
Newborns develop hydronephrosis primarily due to obstruction at the junction between the kidneys and ureters, or between the ureters and bladder. If the obstruction of mild hydronephrosis can be resolved during the neonatal period, renal function and morphology can return completely to normal. 85% of neonatal hydronephrosis is physiological, and only 15% requires surgery.