Prostate gland & seminal vesicles
Other nonneoplastic lesions
Ectopic prostate

Topic Completed: 1 March 2012

Minor changes: 30 October 2020

Copyright: 2003-2021,, Inc.

PubMed search: Ectopic prostate

Komal Arora, M.D.
Page views in 2020: 288
Page views in 2021 to date: 9
Cite this page: Arora K. Ectopic prostate. website. Accessed January 16th, 2021.
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

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Bladder mass

Cervical lesion

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