Colon tumor
Other tumors

Author: Charanjeet Singh, M.D. (see Authors page)

Revised: 4 January 2017, last major update May 2012

Copyright: (c) 2003-2017,, Inc.

PubMed search: teratoma colon

Cite this page: Teratoma. website. Accessed April 21st, 2018.
Definition / general
  • Rare in colon or rectum
  • Usually mature
  • Excision is curative in all colonic cases of mature cystic teratoma reported to date
Case reports
Gross description
Dermoid cyst:
  • Unilocular cyst with thin uniform wall and smooth lining, contains tan / white cheesy material that flakes away in layers
  • May contain hair or teeth
Microscopic (histologic) description
Dermoid cyst:
  • Cyst lined by keratinizing stratified squamous epithelium with granular tissue
  • Cyst wall may contain sebaceous glands and other adnexal structures
  • Variable fibrosis and smooth muscle
  • No endodermal or mesodermal elements; no immature elements or atypia
Microscopic (histologic) images

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Dermoid cyst