Monday 2 January 2012

Lateral Medullary Infarction

A 52 y o male presented with vertigo, nausea and vomiting.
On neurological examination right facial numbness, right sided ataxia, difficulty elevating the soft palate on the right, numbness of the left side of the body, and dysarthria.
MRI Diffusion show a focus of recent ischemia with restricted diffusion in lateral portion of right half of medulla - Lateral Medullary Infarction.

Lateral Medullary Infarct 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.

Related post : Medial-medullary-infarction

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