Penis and scrotum
Inflammatory lesions
Mucoid cyst

Authors: Antonio Cubilla, M.D., Alcides Chaux, M.D. (see Authors page)

Revised: 30 March 2018, last major update May 2010

Copyright: (c) 2002-2018,, Inc.

PubMed Search: Mucoid cyst penis

Cite this page: Cubilla, A., Chaux, A. Mucoid cyst. website. Accessed December 12th, 2018.
Definition / general
  • Inflammatory lesion due to accessory urethral canals (entrapped urothelium during development) on foreskin or glans, with intraepithelial mucous cells or glands
  • Also includes some median raphe cysts (uncommon; found from distal penis and scrotum toward the perineum in a midline position; considered a congenital alteration in embryologic development, Urology 2008;71:830)
Clinical features
  • Slow growing painless cystic mass
  • Often has an incorrect clinical and pathologic diagnosis (J Urol 1976;115:397)
Case reports
  • Excision is curative
Clinical images

Images hosted on other servers:

Median raphe cysts

Microscopic (histologic) description
  • Epithelium is stratified columnar with intraepithelial mucous cells or associated mucous glands
Microscopic (histologic) images

Images hosted on other servers:

Pseudostratified columnar epithelium

Single larger mucinous cell within epithelium




Positive stains
Negative stains