What are etiologic mechanisms for posterior cerebral artery (PCA) stroke?

Updated: Jul 30, 2018
  • Author: Erek K Helseth, MD; Chief Editor: Helmi L Lutsep, MD  more...
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Answer

The mechanism of stroke involving the posterior cerebral artery (PCA) territory is variable. Common etiologic considerations for PCA stroke include the following:

  • Cardiogenic embolization

  • Atheromatous disease of proximal vessels - Results in occlusion and/or artery-to-artery embolization

  • Dissection of proximal vessels - Results in occlusion and/or artery-to-artery embolization

  • Intrinsic PCA atheromatous disease


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