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Internal angular dermoid cyst

Case contributed by Ahmed Abdrabou
Diagnosis almost certain

Presentation

Swelling at the medial angle of the right orbit

Patient Data

Age: 20 years
Gender: Male

Orbit

mri

Right internal angular extraconal fat containing lesion displays bright signal in T1 and T2WIs and shows low signal in fat suppression techniques. No enhancement in post-contrast study.

Case Discussion

Orbital dermoid cyst is a fat-containing benign lesion that occurs at medial or lateral angle of the orbit. On MRI, fat content appears hyperintense in T1 and T2WIs and confirmation requires fat suppression techniques.

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