Germ cell tumors

Epidermoid cyst

Topic Completed: 1 August 2011

Minor changes: 2 April 2021

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PubMed Search: Ovarian epidermoid cyst

Mohiedean Ghofrani, M.D.
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Cite this page: Ghofrani M. Epidermoid cyst. PathologyOutlines.com website. https://www.pathologyoutlines.com/topic/ovarytumorEIC.html. Accessed October 21st, 2021.
Definition / general
  • Ovarian cyst lined exclusively by mature squamous epithelium
  • Also called epidermal inclusion cyst
  • Do not confuse with dermoid cyst, which is a mature cystic teratoma (see differential diagnosis)
  • Very rare
  • 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

AFIP images

Keratinized material

Differential diagnosis
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