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Which moiety is the ureterocele associated with in a duplex collecting system?
The upper pole moiety. The lower pole moiety is more likely to be the one prone to reflux.
CT shows a left kidney normal in size, shape and cortical thickness. The right kidney is hypoplastic and in the excretory phase shows two separate renal pelvis each with a ureter. There is dilatation of the right distal ureter, and a contrast-filled structure protruding into the lumen of the bladder on the excretory phase, consistent with a ureterocele.