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Table 2. Grading system for reflux

GRADING SYSTEM FOR VESICOURETHRAL REFLUX PROPOSED BY THE INTERNATIONAL REFLUX STUDY COMITTEE

ATTEMPT OF SCINTIGRAPHIC GRADING OF VESICOURETERAL REFLUX

GRADE I -
Reflux is into ureter only

GRADE I - refluxis into ureter only

RCN GRADE 1
Grade I radiographically

MILD - Grade I and Grade II radiographically Activity confined to ureter, especially distal ureter.

 

GRADE I I -
Reflux fills the ureter, pelvis, and calyces, with no dilation and preservation of the normal sharp calyceal fornices.

GRADE II - Activity in the renal pelvis, but without dilation of pelvis.

RCN GRADE 2
Grade I and Grade II radiographically - A small amount of Tracer reaching the renal collecting system

LOW GRADE REFLUX GRADE I + GRADE II

GRADE III -
adds mild or moderate dilation or tortuosity of the ureter with mild to moderate dilation of the pelvis

GRADE III - Ureters and pelvis are both mildly dilated, but there is no tortuosity of the ureter.

MODERATE-Grade III. Activity extends to pelvicalyceal system.

GRADE IV -
Angels of the fornices are obliterated, but papillary impressions are maintained in a majority of the calyces

GRADE IV- Both the ureter and renal pelvis are moderately dilated, with mild to moderate ureteral tortuosity.

RCN GRADE 3
Grade IV and Grade V radiographically - A large amount of tracer refluxing in to a dilated and Tortuous ureter and pelvicalyceal dilatation is present.

HIGH GRADE -
Grade IV and Grade V Distendent redundant collecting system

HIGH GRADE REFLUX GRADE IV + GRADE V

GRADE V-
Papillary impressions are no longer visible in the majority of calyces

GRADE V- The ureter is dilated and has a corkscrew appearance. The renal pelvis is severely dilated.

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