Testis and epididymis
Non-neoplastic testicular lesions
Reviewer: Sean Williamson, M.D. (see Reviewers page)
Revised: 7 June 2013, last major update December 2012
Copyright: (c) 2002-2013, PathologyOutlines.com, Inc.
- Rare form of benign testicular teratoma, characterized by pilosebaceous units arranged around predominantly unicystic lesion, often containing hair
- Non-cutaneous elements may be present, but lack cytologic atypia seen in usual mature teratoma (Am J Surg Pathol 2001;25:788)
- 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
Epidermoid vs dermoid cyst vs usual teratoma
End of Testis and epididymis > Non-neoplastic testicular lesions > Dermoid cyst
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