havard neuro 17 Head neck.txt

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Author:
tyvachon
ID:
68895
Filename:
havard neuro 17 Head neck.txt
Updated:
2011-02-25 11:34:32
Tags:
radiology resident neuro head neck
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Description:
radiology resident neuro head neck
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  1. 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
  2. Optic neuritis:
    abnormal T2 signal and enhancement but not enlarged � MS, sarcoid, infection
  3. Optic neuropathy:
    abnormal T2 signal only � compression, ischemia, pharmacologic, toxins, trauma
  4. Optic nerve tumor:
    abnormal T2 signal and enhancement and nerve enlarged � glioma, meningioma
  5. Optic nerve sheath enlargement: tumor �
    optic nerve glioma, meningioma, meningeal carcinomatosis, mets, lymphoma, leukemia;
  6. Optic nerve sheath enlargement: inflammatory �
    optic neuritis, pseudotumor, sarcoid; increased intracranial pressure; trauma � hematoma
  7. Tramtrack enhancement of orbital nerve:
    optic nerve meningioma, optic neuritis, idiopathic, pseudotumor, sarcoid, lymphoma, leukemia, perioptic hemorrhage, mets, normal variant

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