Testis & epididymis
Germ cell tumors
Dermoid cyst

Topic Completed: 1 December 2012

Minor changes: 28 March 2019

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PubMed search: Dermoid cyst testis [title]

Sean R. Williamson, M.D.
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Cite this page: Williamson S. Dermoid cyst. PathologyOutlines.com website. http://www.pathologyoutlines.com/topic/testisdermoid.html. Accessed August 8th, 2020.
Definition / general
  • Rare form of benign testicular teratoma, characterized by pilosebaceous units arranged around predominantly unicystic lesion, often containing hair
  • Noncutaneous elements may be present but lack cytologic atypia seen in usual mature teratoma (Am J Surg Pathol 2001;25:788)
Microscopic (histologic) description
  • Organoid arrangement of pilosebaceous units around epidermal epithelium
  • Lipogranulatomous reaction in testis parenchyma due to leakage of sebaceous secretion
  • Other tissue types sometimes present
  • No intratubular germ cell neoplasia (IGCNU), no immature elements
Microscopic (histologic) images

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Epidermoid vs dermoid cyst vs usual teratoma

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