|
A 62 year-old man with diabetes developed the abrupt onset of right facial numbness and right sided ataxia. On examination, a right Horner's syndrome was present in addition to right sided ataxia, right facial numbness, and loss of pinprick sensation on the left side of the body. |
| Lateral Medullary Infarction: (Left) T2-weighted axial MRI; (Middle) Flair axial MRI; (Right) Diffusion-weighted axial MRI: 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
10/19/06
Copyrighted 2006. David C Preston