Benign lesions / conditions
Ectopic prostate

Authors: Komal Arora, M.D. (see Authors page)

Revised: 21 July 2016, last major update March 2012

Copyright: (c) 2003-2016,, Inc.

PubMed search: Ectopic prostate
Cite this page: Ectopic prostate. website. Accessed December 15th, 2018.
Definition / general
  • Very rare, < 10 cases described
  • Most commonly located in the bladder and urethra of males
  • Most likely represents the persistence of embryonic structures (Histopathology 2011;58:750)
  • Cervical cases are incidental (2 patients) or present in cone biopsy for high grade dysplasia
  • May be similar to multilocular prostatic cystadenoma, although distinct from prostate
  • Prostatic differentiation in ovarian mesonephric remnants has also been described (Am J Surg Pathol 1999;23:232)
Case reports
Microscopic (histologic) description
  • Ducts and acini, some papillary or cribriform, with prominent squamous metaplasia
Microscopic (histologic) images

Images hosted on other servers:

Bladder mass

Cervical lesion

Presacral mass

Positive stains
  • PSA, PAP, high molecular weight keratin (for basal cells)