Artery of Percheron territory infarct

Discussion:

Bilateral thalamic infarcts are not common. Paramedian thalami are most commonly affected location. Infarcts are asymmetrical and caused by multiple emboli or small artery disease. Artery of Percheron occlusion results in bilateral medial thalamic and rostral mesencephalic infarctions with a relatively symmetrical distribution. When the artery of Percheron is occluded, the thalamic infarcts are always bilateral and medial.

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