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General
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Radiologic images
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MR - large tumor of orbital apex causing proptosis

Clinical images
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Tumor arising adjacent to sphenoid wing
has invaded superior lateral orbit causing
downward displacement and proptosis

Micro description
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Micro images
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Tumor growth within dura has markedly compressed the optic nerve

Tumor of superior lateral orbit, and unrelated to meninges of optic nerve

Invasion of sphenoid bone

Islands of meningothelial cells infiltrate extraocular muscle

Meningothelial cells arranged in small nests with a whorled pattern

Differential diagnosis
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End of Eye > Orbit and optic nerve > Meningioma of orbit



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