Urinary Reflux Diagrams
Urinary Reflux Diagrams
A series of diagrams showing the different stages of reflux.
Urinary reflux stages
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.
This page last reviewed 28 October 2021.
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