Prostate
Microscopic mimics of prostatic carcinoma
Verumontanum mucosal hyperplasia


Topic Completed: 1 September 2015

Revised: 27 February 2019

Copyright: 2003-2019, PathologyOutlines.com, Inc.

PubMed Search: Verumontanum mucosal hyperplasia

Andres Matoso, M.D.
Page views in 2018: 1,133
Page views in 2019 to date: 1,221
Cite this page: Matoso A. Verumontanum mucosal hyperplasia. PathologyOutlines.com website. http://www.pathologyoutlines.com/topic/prostateverumonthyper.html. Accessed November 16th, 2019.
Definition / general
  • Well circumscribed small acinar proliferation in or adjacent to verumontanum and posterior prostatic urethra
Sites
  • The verumontanum is located in the posterior aspect of the prostatic urethra
  • It is the area where the utricle and the ejaculatory ducts merge with the urethra
Clinical features
  • The presence of verumontanum mucosa gland hyperplasia is an asymptomatic morphologic variant of the glands underlying the posterior wall of the prostatic urethra
Diagnosis
  • Can be identified in TURP specimens or in needle biopsies of the prostate
Case reports
Treatment
  • Not required
Microscopic (histologic) description
  • Crowded small acinar proliferation, usually arranged in a well circumscribed nodule
  • The glands can have intraluminal concretions that vary in color from orange to gray or green
  • May be seen underlying the urethral urothelium
Microscopic (histologic) images

Images hosted on other servers:
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Intraluminal concretions

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Features of carcinoma not present

Positive stains
  • The immunophenotype is identical to normal prostate glands, including basal cell markers
Differential diagnosis
  • Verumontanum mucosal gland hyperplasia (VMGH), when present in a prostate needle biopsy, could be mistaken for low grade prostatic adenocarcinoma (Gleason pattern 3)
  • The lobular architecture and the presence of basal cells are features to differentiate it from Gleason pattern 3 cancer
  • Another helpful feature is the presence of corpora amylacea or the orange-grey-green concretions that are features of VMGH and not of prostatic carcinoma
  • Occasionally, it can present with a papillary architecture simulating prostatic duct adenocarcinoma
  • In contrast to prostatic duct carcinoma, the cells in VMGH are more cuboidal and without nuclear atypia
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