World Library  
Flag as Inappropriate
Email this Article

Posterior cerebral artery syndrome

Article Id: WHEBN0012391615
Reproduction Date:

Title: Posterior cerebral artery syndrome  
Author: World Heritage Encyclopedia
Language: English
Subject: Lateral pontine syndrome, Foville's syndrome, Anterior cerebral artery syndrome, Millard–Gubler syndrome, Cerebellar stroke syndrome
Collection: Stroke
Publisher: World Heritage Encyclopedia

Posterior cerebral artery syndrome

Posterior cerebral artery syndrome
Classification and external resources
Outer surface of cerebral hemisphere, showing areas supplied by cerebral arteries. (Yellow is region supplied by posterior cerebral artery.)
ICD-10 G46.2
eMedicine article/2128100
MeSH D020762

Posterior cerebral artery syndrome is a condition whereby the blood supply from the posterior cerebral artery (PCA) is restricted, leading to a reduction of the function of the portions of the brain supplied by that vessel: the occipital lobe, the inferomedial temporal lobe, a large portion of the thalamus, and the upper brainstem and midbrain. [1][O'Sullivan, 2007].

Depending upon the location and severity of the occlusion, signs and symptoms may vary within the population affected with PCA syndrome. Blockages of the proximal portion of the vessel produce only minor deficits due to the collateral blood flow from the opposite hemisphere via the posterior communicating artery. In contrast, distal occlusions result in more serious complications. Visual deficits, such as agnosia, prosopagnosia or cortical blindness (with bilateral infarcts) may be a product of ischemic damage to occipital lobe. Occlusions of the branches of the PCA that supply the thalamus can result in central post-stroke pain and lesions to the subthalamic branches can produce “a wide variety of deficits”.[1]

Left posterior cerebral artery syndrome presents alexia without agraphia; the lesion is in the splenium of the corpus callosum.

Signs and Symptoms

Peripheral Territory Lesions

  1. Contralateral homonymous hemianopsia[1][2]
  2. cortical blindness with bilateral involvement of the occipital lobe branches[3]
  3. visual agnosia[1]
  4. prosopagnosia[1]
  5. dyslexia, Anomic aphasia, color naming and discrimination problems[1]
  6. memory defect[1]
  7. topographic disorientation[1]

Central Territory Lesions

  1. central post-stroke (thalamic) pain: spontaneous pain, dysesthesias and sensory impairments[1]
  2. involuntary movements: chorea, intention tremor, hemiballismus[1]
  3. contralateral hemiplegia[1]
  4. Weber’s syndrome: occulomotor nerve palsy[4]
  5. Bálint's syndrome: loss of voluntary eye movements optic ataxia, asimultagnosia (inability to understand visual objects)[5]


  1. ^ a b c d e f g h i j k O'Sullivan, Susan (2007). "Physical Rehabilitation", p.711-713. F.A. Davis, Philadelphia. ISBN 0-8036-1247-8
  2. ^ The Internet Stroke Center. Stroke syndromes: Posterior cerebral artery - unilateral occipital. [Internet]. [updated 1999 July; cited 2011 May 13]. Retrieved from
  3. ^ The Internet Stroke Center. Stroke syndromes: Cortical blindness. [Internet]. [updated 1999 July; cited 2011 May 13]. Retrieved from
  4. ^ The Internet Stroke Center. Stroke syndromes: Weber's syndrome. [Internet]. [updated 1999 July; cited 2011 May 13]. Retrieved from
  5. ^ The Internet Stroke Center. Stroke syndromes: Balint Syndrome. [Internet]. [updated 1999 July; cited 2011 May 13]. Retrieved from

External links

This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.

Copyright © World Library Foundation. All rights reserved. eBooks from World Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.