Presentation
Swelling left lateral orbit inseparable from eyelid since birth
Patient Data
Age: 1 year
Gender: Female
From the case:
External angular dermoid cyst
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Info
well-defined cystic lesion measuring about 7 x 10 x 12 mm in the subcutaneous plane of lateral margins of the left orbit
no evidence of intraorbital extension
underlying bone and adjacent lacrimal gland are unremarkable
mucosal thickening of bilateral maxillary sinuses and ethmoidal air cells
Case Discussion
Orbital dermoid cyst is the most common type of orbital mass in children. The differential diagnosis includes an epidermoid cyst. Although no fat density is observed, orbital dermoids typically present with a heterogeneous composition of soft tissue, fluid, and fat density, with occasional calcifications.
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