Intravesical Prostatic Protrusion

The IPP was classified into three stages: 
1. Grade I  : < 5 mm; 

2. Grade II : between 5 and 10 mm; and 
3. Grade III : over 10 mm

Image :
http://bmcurol.biomedcentral.com/articles/10.1186/s12894-015-0081-y