Posterior communicating artery
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At the time the article was created Jeremy Jones had no recorded disclosures.View Jeremy Jones's current disclosures
At the time the article was last revised Frank Gaillard had the following disclosures:
- Biogen Australia Pty Ltd, Investigator-Initiated Research Grant for CAD software in multiple sclerosis: finished Oct 2021 (past)
These were assessed during peer review and were determined to not be relevant to the changes that were made.View Frank Gaillard's current disclosures
The posterior communicating artery (PCom) makes up the posterior linkage in the circle of Willis.
The posterior communicating artery originates from the posterior aspect of the C7 (communicating) segment of the internal carotid artery and extends posteromedially to anastomose with the ipsilateral posterior cerebral artery and forms part of the circle of Willis.
The posterior communicating artery gives off many fine, scarcely visible, perforating branches. The largest perforating branch is called the premammillary (or anterior thalamoperforating) artery.
Perforators from the posterior communicating artery supply:
part of the thalamus
posterior communicating artery fenestration: extremely rare
posterior communicating artery hypoplasia: incidence ~35%
anterior choroidal artery origin from the posterior communicating artery