Testis & epididymis

Germ cell tumors

Dermoid cyst

Topic Completed: 1 December 2012

Minor changes: 9 September 2020

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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. https://www.pathologyoutlines.com/topic/testisdermoid.html. Accessed December 3rd, 2021.
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
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