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Posterior Cerebral Artery
The posterior cerebral arteries
stem in most individuals from the basilar artery but sometimes
originate from the ipsilateral internal carotid artery [Garcia
JH et al., In Barnett HJM at al (eds) Stroke Pathophysiology,
Diagnosis, and Management New York Churchill Livingstone 1992
125]. The posterior arteries supply the temporal and occipital
lobes of the left cerebral hemisphere and the right hemisphere.
When infarction occurs in the territory of the posterior cerebral
artery, it is usually secondary to embolism from lower segments
of the vertebral basilar system or heart.
Clinical symptoms associated with
occlusion of the posterior cerebral artery, depend on the
location of the occlusion and may include thalamic syndrome,
thalamic perforate syndrome, Weber's syndrome, contralateral
hemplegia, hemianopsia and a variety of other symptoms, including
including color blindness, failure to see to-and-fro movements,
verbal dyslexia, and hallucinations. The most common finding
is occipital lobe infarction leading to an opposite visual
field defect.
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Stroke Education
