Prostate gland & seminal vesicles
Other nonneoplastic lesions
Ectopic prostate
Author: Komal Arora, M.D.
Topic Completed: 1 March 2012
Minor changes: 30 October 2020
Copyright: 2003-2021, PathologyOutlines.com, Inc.
PubMed search: Ectopic prostate
Table of Contents
Definition / general | Case reports | Microscopic (histologic) description | Microscopic (histologic) images | Positive stainsCite this page: Arora K. Ectopic prostate. PathologyOutlines.com website. https://www.pathologyoutlines.com/topic/prostateectopic.html. 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
- 24 year old man with bladder mass (Indian J Urol 2008;24:564)
- 78 year old man with presacral mass (Arch Pathol Lab Med 2000;125:286)
- Etopic prostatic tissue in uterine cervix (Am J Surg Pathol 2000;24:1224, Am J Surg Pathol 2001;25:1215)
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
Positive stains
- PSA, PAP, high molecular weight keratin (for basal cells)
