Pseudotumor cerebri MRI

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief:

MRI

MRI findings of parenchyma and ventricles are mostly normal but some anomalies have been reported in IIH patients:

• Posterior sclera flattening (43 to 80 percent)
• Perioptic subarachnoid space distesion (45 to 67 percent)
• Gadolinium enhancement of the prelaminar optic nerve (7 to 50 percent)
• Empty sella (25 to 80 percent)
• Prelaminar optic nerve protrusion (3 to 30 percent)
• Orbital optic nerve vertical tortuosity (40 percent)(54 ta 60)

some of the less common findings are:

• tonsillar ectopia

• Meckel’s cave and cavernous sinuses stenosis
• meningoceles
• Foramen ovale widening(64 ta 67)