Orbital dermoid cyst

Case contributed by Bahman Rasuli


Painless swelling of the right eye in the medial side for a long time.

Patient Data

Age: 35 years
Gender: Male

CT scan shows a well-defined smooth margin fat-containing extraconal mass located at the superonasal side of the right globe. No perilesional inflammatory changes. No calcifications.

Mucosal thickening at right anterior ethmoidal air cells and bilateral maxillary sinuses.

Case Discussion

Orbital dermoid cysts are usually extraconal, non-enhancing masses with smooth margins, cystic, and/or solid components. They are typically heterogeneous with soft tissue, fluid, and fatty (sebum) components; occasionally calcifications may be present. They are most commonly seen in superotemporally followed by superonasal locations.

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