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#1
07-30-2009
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Uncal [Transtentorial] Herniation
What? Ipsilateral dilated pupils
Why? CN III compression What? Contralateral homonymous hemianopsia Why? Posterior cerebral artery compression What? Ipsilateral paresis Why? Compression of contralateral crus cerebri [Kernohan's notch], this is a false localizing sign What? Duret hemorrhage of pons and midbrain Why? paramedian artery rupture because of caudal displacement of the brain stem 
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| Posted By | For | Type | Date | |
| Homonymous Hemianopsia on RightHealth | This thread | Refback | 08-02-2009 02:12 PM | |
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![Uncal [Transtentorial] Herniation](/iconimages/usmle-step-1-bits-pieces/uncal-transtentorial-herniation_ltr.gif)
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