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Lateral Medullary Infarction - Case 1

A 52 year-old man presented with vertigo, nausea and vomiting. His neurological exam demonstrated right facial numbness, right sided ataxia, difficulty elevating the soft palate on the right, numbness of the left side of the body, and dysarthria.

Outline the Infarction

Lateral Medullary Infarction: Flair axial MRI scans. Note the small area of infarction in the right lateral medulla. Strokes in the lateral medulla usually result from occlusion of the vertebral artery or posterior inferior cerebellar artery. A stroke in the lateral medulla results in a Wallenberg's syndrome, manifested by nausea, vomiting, and vertigo along with ipsilateral facial numbness, weakness of the ipsilateral soft palate, ipsilateral ataxia, and contralateral numbness of the body. An ipsilateral Horner's syndrome (ptosis, miosis, anhidrosis) may be present.

Revised 11/30/06
Copyrighted 2006. David C Preston