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The triad of Horner's syndrome,ipsilateral ataxia,and contralateral hypalgesia will clinically identify patients with lateral medullary infarction.Facial weakness and ocular symptoms are frequent and do not necessarily imply that the infarction extends beyond the lateral medulla. Cerebellar infarcts only infrequently accompany lateral medullary syndrome,suggesting that most of the posterior inferior cerebellar artery territory is spared,despite the high frequency of vertebral artery occlusion. |
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