Congenital abnormalities of the kidneys and the urinary tract are the most common sonographically identified malformations in the prenatal period. The aim of prenatal diagnosis and management is to detect those anomalies having an impact on the prognosis of the affected child and requiring early postnatal evaluation or treatment to minimize adverse outcomes. Congenital abnormalities of the genitourinary tract are the most common sonographically identified malformations as such they represent 15-20% of all prenatally diagnosed congenital anomalies, obstructive uropathies account for the majority of cases.

Prenatal diagnosis improves the outcome of the affected child because of early recognition and treatment of critical obstructions and urinary tract infections, preventing further renal damage and loss of renal function. Embryology The urinary tract develops from the third week of…