Lateral Medullary Infarct - Wallenberg

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Diffusion Weighted Imaging (DWI) is showing acute infarct lateral in medulla oblongata on the right side (arrows). Note high signal on DWI, low on ADC and high on T2. This represents clinically Wallenberg Syndrome that is associated with Lateral Medullary Infarct. Infarct is due to occlusion of Posterior Inferior Cerebellar Artery (PICA). In this case the infarct is rather large, but sometimes it can be quite small. So look carefully.

See also my previous post with same type of infarct:
Wallenberg Syndrome - Lateral Medullary Syndrome
You may also check this article:
Jong S. Kim - Pure lateral medullary infarction: clinical–radiological correlation of 130 acute, consecutive patients

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