Urinary Reflux Diagrams

Urinary Reflux Diagrams

A series of diagrams showing the different stages of reflux.

 

Share

The urinary reflux degrees of severity

There are different degrees of severity of urinary reflux, graded from 1 to 5. Grade 1 is the mildest form, while grade 5 is the most severe.

Normal kidney, ureter, and bladder

Grade 1 urinary reflux

Urine (shown in blue) refluxes part-way up the ureter.

Grade 2 urinary reflux

Urine refluxes all the way up the ureter.

Grade 3 urinary reflux

Urine refluxes all the way up the ureter with some widening (dilatation) of the ureter and the part of the kidney where urine collects (calyces).

Grade 4 urinary reflux

Urine refluxes all the way up the ureter with a marked widening of the ureter and the part of the kidney where urine collects.

Grade 5 urinary reflux

Massive reflux of urine up the ureter with marked twisting and widening of the ureter and the part of the kidney where urine collects.

Acknowledgements

Graphics of a normal kidney, ureter and bladder and grades 1 to 5 reflux reproduced from Texas Pediatric Surgical Associates website (no longer available) with permission.

This page last reviewed 30 August 2018.

Call Healthline on 0800 611 116 any time of the day or night for free health advice when you need it