Table 1.
Grade I | Reflux into ureters only |
Grade II | Reflux into ureters, pelvis, and calyces |
Grade III | Mild to moderate dilatation or tortuosity of ureters and mild to moderate dilatation of pelvis, but little or no forniceal blunting |
Grade IV | As grade III, but with complete obliteration of forniceal angles, yet maintenance of papillary impressions in calyces |
Grade V | Gross dilatation of ureters, pelvis, and calyces, and papillary impressions in calyces obliterated |