Intrarenal Reflux (UrinaryTract Infection/VUR)

VUCG in a 5-month-old girl with a preceding upper urinary tract infection. There is backflow of contrast in the left kidney, the calices of which are blunt. In addition, there are striated markings of the parenchyma perpendicular to the surface !£harn_34_p£!. The diagnosis is grade IV reflux combined with intrarenal reflux into the papillae. Roughly 2/3 of infants have at least one refluxing papilla, and often refluxing papillae situated in the upper pole of the kidney. This intrarenal reflux seems to be responsible for the development of pyelonephritic scars in vesicoureteral reflux .