Partial anterior circulation infarct

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Partial anterior circulation infarct
Diagram of the arterial circulation at the base of the brain (inferior view). Anterior circulation represented by top half of diagram (with circle of Willis).

Partial anterior circulation infarct (PACI)[1] is a type of cerebral infarction affecting part of the anterior circulation supplying one side of the brain.

a,b)Individual swith a left partial anterior circulation infarct caused by a left middle cerebral artery (MCA) stenosis

Partial anterior circulation stroke syndrome (PACS) refers to the symptoms of a patient who clinically appears to have had a partial anterior circulation infarct, but who has not yet had any diagnostic imaging (e.g. CT Scan) to confirm the diagnosis.

It is diagnosed by any one of the following

If all of the above symptoms are present, a Total Anterior Circulation Infarct is more likely.


  1. "Partial anterior cerebral circulation infarction (Concept Id: C0393955) - MedGen - NCBI". Archived from the original on 27 September 2022. Retrieved 12 September 2022.

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