Ovary - nontumor
Nonneoplastic cysts / other
Epidermoid cyst


Topic Completed: 1 August 2011

Revised: 6 February 2019

Copyright: 2002-2019, PathologyOutlines.com, Inc.

PubMed Search: Ovarian epidermoid cyst
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Cite this page: Ghofrani M Epidermoid cyst. PathologyOutlines.com website. http://www.pathologyoutlines.com/topic/ovarynontumorEIC.html. Accessed May 22nd, 2019.
Definition / general
  • Ovarian cyst lined exclusively by mature squamous epithelium
Terminology
  • Also called epidermal inclusion cyst
  • Do not confuse with dermoid cyst, which is a mature cystic teratoma (see differential diagnosis)
Epidemiology
  • Very rare
Etiology
  • Either monodermal teratoma or originating from surface epithelium (given the presence of Walthard nests in the wall of some) or rete ovarii
Clinical features
Prognostic factors
Case reports
Gross description
  • Cyst with creamy contents
Microscopic (histologic) description
Microscopic (histologic) images

Keratinized material

Differential diagnosis
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