Dermoid tumor and other congenital lesions

Author: Deepali Jain, M.D. (see Authors page)

Revised: 18 April 2018, last major update April 2017

Copyright: (c) 2004-2018, PathologyOutlines.com, Inc.

PubMed Search: Dermoid tumor and other congenital lesions

Cite this page: Jain, D. Conjunctiva: dermoid tumor and other congenital lesions. PathologyOutlines.com website. http://www.pathologyoutlines.com/topic/eyedermoidtumor.html. Accessed December 12th, 2018.
Definition / general
  • A type of choristoma (congenital, nonneoplastic lesion composed of cytologically normal tissue not normally found at that location), often at limbus
  • Mainly children
  • No malignant potential
  • May be associated with colobomas of iris and ciliary body, Goldenhar syndrome (ocular dermoid tumors, extra-auricular appendages, vertebral anomalies, East Afr Med J 2002;79:502), organoid nevus syndrome (also called linear nevus sebaceus of Jadassohn, Br J Ophthalmol 1987;71:268)
Diagrams / tables

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Complex choristoma (figure 1b)

Clinical images

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Gross description
  • Bulbar tumors are firm, localized, elevated, opaque, yellow-white masses at limbus
Microscopic (histologic) description
Microscopic (histologic) images

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Limbal dermoid:
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Subepithelial fibrous tissue resembling
reticular dermis with skin appendages

Complex choristoma:
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Lacrimal gland tissue within a limbal dermoid

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Island of cartilage within a limbal dermoid

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Complex choristoma:
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With ectopic lacrimal gland tissue (figure 2d)

Osseous choristoma:
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Bone within connective tissue capsule

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Bone contains marrow

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Abundant adipose tissue