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Epibulbar dermoid cyst - External and Internal Eye
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Epibulbar dermoid cyst - External and Internal Eye

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Contributors: Brandon D. Ayres MD, Christopher Rapuano MD, Harvey A. Brown MD, Sunir J. Garg MD, Lauren Patty Daskivich MD, MSHS
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Synopsis

Dermoids are an overgrowth of normal, non-cancerous tissue in choristomatous tissue (tissue in an abnormal location). Epibulbar dermoid cysts are either limbal, at the junction of the cornea and sclera, or more posterior, at the junction of the bulbar and lid conjunctiva. Limbal epibulbar dermoid cysts are most often found at the inferior temporal limbus, while the posterior epibulbar dermoid cysts are often hidden under the outer upper eyelid laterally. Worldwide incidence is 1–3 per 10,000. These lesions may not only be cosmetically disfiguring but affect vision depending on how they affect the cornea and, hence, refractive status. Therefore, amblyopia is a serious concern with the limbal form. Foreign body sensation and an enlarging mass may also be presenting symptoms.

Codes

ICD10CM:
D31.00 – Benign neoplasm of unspecified conjunctiva

SNOMEDCT:
72277008 – Dermoid cyst

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Last Updated: 01/20/2015
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Epibulbar dermoid cyst - External and Internal Eye
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Epibulbar dermoid cyst : Sclera/bulbar conjunctiva cyst, Unilateral, Visual impairment
Clinical image of Epibulbar dermoid cyst
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