Multi Imaging Modality in Diagnosis of Unusual Giant Hydronephrosis of the Non Functioning Lower Moiety in A Partial Duplex Kidney with Distal Ureteric Stricture

Duplex collecting system of the kidney is a common congenital anomaly urinary tract. It usually asymptomatic clinically with normal renal function. In rare instances, it may complicate giant hydronephrosis. The following case middle aged woman history recurrent tract infections (UTI) and flank pain diagnosed bilateral partial duplex complicated unusual non-functioning lower moiety left hydronephrosis due to distal ureteric stenosis which probably enhanced reverse flow urine together YO-YO reflux.