Intradiploic epidermoid cyst

Case contributed by Ammar Haouimi
Diagnosis probable

Presentation

Painless swelling of the right supraorbital region with mild proptosis.

Patient Data

Age: 40 years
Gender: Male

There is an expansile lobulated lytic lesion of the superolateral aspect of the right orbit with a bony defect and intraorbital extension displacing the superior and lateral rectus muscles with grade I proptosis. The lesion shows a homogeneous low-density with no calcification, fatty component or enhancement on postcontrast images. 

Case Discussion

CT features suggestive of an intradiploic epidermoid cyst of the superolateral aspect of the orbit.

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