Prenatal Diagnosis of Bilateral Fetal Duplex Kidneys and a Short Review about Duplex Kidneys

Duplex kidney is one of common major congenital abnormalities of the urinary tract with an incidence about 1% of all live births and higher frequency in females than in males. Majority of duplex kidneys are unilateral. Although the antenatal diagnosis of fetal hydronephrosis is simple, the diagnosis of fetal renal duplication is infrequent, especially in case the collecting system is not dilated. Here we reported bilateral duplex collecting system that is prenatally diagnosed with obstruction findings on one kidney and no obstructive findings on other side.