External angular dermoid

Case contributed by Dr Hidayatullah Hamidi

Presentation

Right eye lower lid swelling for two years.

Patient Data

Age: 20 years
Gender: Female
CT

A well defined cystic lesion (2.3 x 1.6 x 2.3 cm) in subcutaneous plane of lateral margins of right orbit with homogeneous hypodense content and uniform wall with no appreciable enhancement. No intra-orbital extension. Underlying bone and adjacent lacrimal gland are unremarkable.

Note is made for opacification of bilateral ethmoid and maxillary sinuses.

Case Discussion

The external angle is the most common site for these benign orbital lesions. 

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