PMC4244767_01
(a and b) Axial and sagittal MRI scan of brain and orbit showing a large well-marginated extra-axial middle cranial fossa mass with areas of cystic degeneration extending into the orbit
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F1
MRI images of brain and orbit [Figure 1a and b] demonstrated a large well-marginated extra-axial middle cranial fossa mass with myxomatous regions at the right anterior temporal region extending into right intraconal space of orbit through optic foramen and superior orbital fissure to produce displacement of optic nerve and eyeball to cause proptosis.
Histopathology showing neoplastic spindle cells arranged in fascicles and whorls (H and E stain, x100)
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F2
All these features confirmed the diagnosis of benign schwannoma [Figure 2].