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Anatomical approach

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

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The clinical features of a stroke are heavily dependent upon the artery in which the lesion occurs.

The important vascular territories to consider are:

  • internal carotid, forming:
    • anterior cerebral artery
    • middle cerebral artery

  • vertebrobasilar system, forming:
    • posterior cerebral artery

It may also be useful to consider the brain structures infarcted e.g. brainstem.

Note that there are many variations in the anatomy of the blood supply of the brain - for example in the circle of Willis, such that in many patients collateral blood supply may be non-existent.


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The content herein is provided for informational purposes and does not replace the need to apply professional clinical judgement when diagnosing or treating any medical condition. A licensed medical practitioner should be consulted for diagnosis and treatment of any and all medical conditions.

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