Granulomatous prostatitis

Granulomatous prostatitis is a nodular form of chronic prostatitis. It is usually diagnised by biopsy.


  • idiopathic
  • infection
  • iatrogenic: (BCG,post radiation)
  • systemic disease such as
    • sarcoidosis 
    • autoimmune diseases

Radiographic features

General features

Often there is no definite ultrasound or MRI finding that allows a specific diagnosis of granulomatous prostatitis to be made, or differentiation from prostatic carcinoma 2.

Widening of the prostatic urethra however may be a useful feature in differentiation from prostatic carcinoma 1.


May be seen as a hypoechoic nodule (~70%) or diffuse hypoechoic peripheral zone (~30%)


Three morphological MRI patterns have been described which are diffuse (most common), nodular, and cystic with mural nodule 3.

Signal characterisitcs include 

  • T2 - hypointense
  • C+ (Gd) - no enhancement following Gd-DTPA
Prostate pathology
Share article

Article information

rID: 24640
System: Urogenital
Section: Pathology
Tags: refs, cases
Synonyms or Alternate Spellings:

Support Radiopaedia and see fewer ads

Updating… Please wait.

Alert accept

Error Unable to process the form. Check for errors and try again.

Alert accept Thank you for updating your details.