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CASE REPORTS
Published online: 2020-07-08
Submitted: 2020-06-19
Accepted: 2020-07-01
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A tale of two arteries: dual posterior cerebral arteries with vascular bridges. A possible protective pattern?

Y. Mansour, R. Kulesza
DOI: 10.5603/FM.a2020.0070
·
Pubmed: 32644187

open access

Ahead of Print
CASE REPORTS
Published online: 2020-07-08
Submitted: 2020-06-19
Accepted: 2020-07-01

Abstract

Stroke is a common morbidity and a frequent cause of disability and even death. The impact of cerebrovascular events are dictated by the brain region involved and can be complicated by anatomical variations. One of the most common variations impacting the cerebrovasculature is the presence of a fetal posterior cerebral artery. This vessel arises from the internal carotid artery instead of the basilar artery and is often associated with more extensive injury in cerebrovascular events. Herein, we report the case of a 60-year-old male who had numerous arterial abnormalities, including a kink and a coil of the left internal carotid, two posterior communicating arteries on the right and two posterior cerebral arteries (PCA) on the left, one arising from the internal carotid (fetal PCA) and one from the basilar. The fetal PCA supplied the thalamus, splenium of the corpus callosum and primary visual cortex. The basilar PCA supplied the midbrain and parts of the occipital lobe. These PCAs were connected to each other by a vascular bridge and the fetal PCA was connected to the middle cerebral artery by an additional vascular bridge. This vascular pattern would appear to provide collateral support around blockages in the internal carotid and main stem middle and posterior cerebral arteries.

Abstract

Stroke is a common morbidity and a frequent cause of disability and even death. The impact of cerebrovascular events are dictated by the brain region involved and can be complicated by anatomical variations. One of the most common variations impacting the cerebrovasculature is the presence of a fetal posterior cerebral artery. This vessel arises from the internal carotid artery instead of the basilar artery and is often associated with more extensive injury in cerebrovascular events. Herein, we report the case of a 60-year-old male who had numerous arterial abnormalities, including a kink and a coil of the left internal carotid, two posterior communicating arteries on the right and two posterior cerebral arteries (PCA) on the left, one arising from the internal carotid (fetal PCA) and one from the basilar. The fetal PCA supplied the thalamus, splenium of the corpus callosum and primary visual cortex. The basilar PCA supplied the midbrain and parts of the occipital lobe. These PCAs were connected to each other by a vascular bridge and the fetal PCA was connected to the middle cerebral artery by an additional vascular bridge. This vascular pattern would appear to provide collateral support around blockages in the internal carotid and main stem middle and posterior cerebral arteries.

Get Citation

Keywords

variation, cerebral, vasculature, fetal

About this article
Title

A tale of two arteries: dual posterior cerebral arteries with vascular bridges. A possible protective pattern?

Journal

Folia Morphologica

Issue

Ahead of Print

Published online

2020-07-08

DOI

10.5603/FM.a2020.0070

Pubmed

32644187

Keywords

variation
cerebral
vasculature
fetal

Authors

Y. Mansour
R. Kulesza

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