Granulomatous prostatitis

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

Pathology

Causes
  • 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.

Ultrasound 

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

MRI

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
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Article Information

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

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