Enlargement of the prostate can result in protrusion of prostate tissue into the lumen of the urinary bladder. This primarily involves the median lobe.
Intravesical prostatic protrusion (IPP) can be graded based on height in mm.
Protrusion Height in mm
Grade
< 5 mm
1
5 to 10 mm
2
> 10 mm
3
Therapeutic prostatic artery embolization (PAE) can reduce the protrusion grade and improve symptoms.
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