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Lateral Medulla and Inferior Cerebellar Infarction

A 71 year-old woman presented with vertigo, nausea and vomiting. Examination showed a left sided Horner's syndrome (ptosis, miosis, anhidrosis), left facial numbness, left sided ataxia, weakness of the left soft palate, slurred speech, and numbness over the right side of the body.

Show the Blood in the Left Vertebral Wall        Note the Absent Left Vertebral        Note the Multiple Intrancranial Stenoses

Lateral Medullary and Inferior Cerebellar Infarction: (Left) Dissection protocol MRI of the upper neck; note the bright signal in the region of the left vertebral artery that indicates acute blood (i.e., dissection of the vertebral artery); (Right) Intracranial MRA; note the absence of the left vertebral artery. Also, note several other areas of intrinsic intracranial vessel narrowing.

Revised 11/22/06
Copyrighted 2006. David C Preston