Artery of Percheron infarction

Discussion:

The AOP is a vascular anomaly wherein a single arterial branch arises from the PCA circulation to supply the midbrain and thalamus.

The AOP was first described by the French medical scientist Gerald Percheron in 1973.

The multiple perforator branches which usually arise from the basilar artery are replaced by branches from this singleton branch of the posterior cerebral artery. Occlusion of this branch leads to a particular type of brain stem infarction with characteristic imaging findings as described.

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