Duplicated collecting system
One-year-old boy with recurrent urinary tract infections.
CT Abdomen and pelvis (IVP)
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Multiplanar CT study during the excretory phase shows (left side):
- complete duplicated ureters extending down to the bladder
- no signs of ureteroceles on the bladder
- Vesico-ureteric reflux into the distal extremity of ureter draining the lower pole. No excreted contrast into the pyelo-ureteral system of the lower renal pole was seen
- lobulated renal contour with multiple internal cysts areas in the lower renal pole that seems to be a pyelo-ureteral dilatation. This nonfunctioning lower pole mimics a renal mass
Duplicated collecting system, also referred as duplex collectiong system, is one of the most common congenital renal tract abnormalities.