Meningioma of the optic nerve sheath

Case contributed by Shervin Sharifkashani
Diagnosis almost certain

Presentation

Right eye proptosis and decreased visual acuity for one year.

Patient Data

Age: 60 years
Gender: Female
This study is a stack
Axial
non-contrast
This study is a stack
Coronal
bone window
This study is a stack
Coronal
non-contrast
This study is a stack
Sagittal
non-contrast
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Info

A lobulated margin solid mass lesion in right orbital cavity intraconal encased the optic nerve sheath complex middle to the distal segment containing a few small calcified foci and axial width 20 x 15 mm and height up to 15 mm and with anterior margin in close contact with right eye retrobulbar uveo-scleral layer is seen. Expansion of the right orbital cavity and right side proptosis are seen. A wide sellar cavity with CSF density is noted.

Case Discussion

The case illustrates the non-contrast MDCT features of pathologically-proved optic nerve sheath meningioma. Calcification in this type of meningioma is relatively rare. Empty Sella is also seen.

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