NCIt related terms : Vesicoureteric Reflux, Grade IV;
NCIt definition : Vesicoureteral reflux in which there is urine reflux into the ureter and renal pelvis.
Moderate dilatation of the ureter and the calyces is present.;
Alternative definition : NICHD: Reflux that fills and grossly dilates the ureter and collecting system with
blunting of the calyces. Some tortuosity of the ureter is also present.;