Testis & paratestis
Germ cell tumors
Teratoma-dermoid cyst
Author: Sean R. Williamson, M.D.
Last author update: 1 December 2012
Last staff update: 28 March 2022
Copyright: 2002-2024, PathologyOutlines.com, Inc.
PubMed search: Dermoid cyst testis [title]
Cite this page: Williamson S. Teratoma-dermoid cyst. PathologyOutlines.com website. https://www.pathologyoutlines.com/topic/testisdermoid.html. Accessed April 25th, 2024.
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
