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Colon tumor

Other tumors

Teratoma of colon

Reviewers: Charanjeet Singh, M.D. (see Reviewers page)
Revised: 2 May 2012, last major update May 2012
Copyright: (c) 2003-2012, PathologyOutlines.com, Inc.


● Rare in colon or rectum
● Usually mature
● Excision is curative in all colonic cases of mature cystic teratoma reported to date

Case reports

● 30 year old man with mature cystic teratoma (dermoid cyst) in cecum (Arch Pathol Lab Med 2002;126:97)
● 41 year old woman with malignant teratoma associated with ulcerative colitis (Virchows Arch A Pathol Anat Histopathol 1987;411:61)
● 76 year old woman with "hairy polyp" (Endoscopy 1989;21:148)

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

Micro 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

Micro images

Dermoid cyst

End of Colon tumor > Other tumors > Teratoma of colon

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