Urinary reflux stages
Urinary reflux is graded 1 to 5. Grade 1 is the mildest form and grade 5 is the most severe.
Normal urinary tract
Grade 1 urinary reflux
Urine 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 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
Reflux of large amounts of urine up the ureter. Marked twisting and widening of the ureter and the part of the kidney where urine collects.
Acknowledgements
Illustrations of normal kidneys, ureter and bladder and grades 1 to 5 reflux by Dr Greta File. Property of KidsHealth.
