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Vascular orbital lesions: tumor �
- hemangioma, lymphangioma, hemangioendothelioma, hemangiopericytoma, meningioma, hypervascular mets; Vascular orbital lesions: vascular (with enlarged superior ophthalmic vein) �
- carotid cavernous fistula, cavernous thrombosis, orbital varix, ophthalmic artery aneurysm
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Optic neuritis:
abnormal T2 signal and enhancement but not enlarged � MS, sarcoid, infection
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Optic neuropathy:
abnormal T2 signal only � compression, ischemia, pharmacologic, toxins, trauma
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Optic nerve tumor:
abnormal T2 signal and enhancement and nerve enlarged � glioma, meningioma
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Optic nerve sheath enlargement: tumor �
optic nerve glioma, meningioma, meningeal carcinomatosis, mets, lymphoma, leukemia;
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Optic nerve sheath enlargement: inflammatory �
optic neuritis, pseudotumor, sarcoid; increased intracranial pressure; trauma � hematoma
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Tramtrack enhancement of orbital nerve:
optic nerve meningioma, optic neuritis, idiopathic, pseudotumor, sarcoid, lymphoma, leukemia, perioptic hemorrhage, mets, normal variant
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