Presentation
Sudden onset ataxia, vertigo and dysphagia.
Patient Data
Small areas of restricted diffusion are seen in the left lateral medulla and left cerebellar hemisphere showing T2 and FLAIR hyperintense signals representing acute ischemic infarction. An area of acute ischemic infarction is also seen in the left basal ganglia. Additional small old infarcts are also seen in bilateral frontoparietal regions, midbrain and pons. Note these do not show any diffusion restriction.
Case Discussion
Lateral medullary syndrome, also known as Wallenberg syndrome, is caused by an acute ischemic infarction of the lateral medulla oblongata most commonly due to the occlusion of the vertebral artery (intracranial part) followed by posterior inferior cerebellar artery (PICA) and its branches