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Isolation and Cannulation of Cerebral Parenchymal Arterioles
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Isolation and Cannulation of Cerebral Parenchymal Arterioles

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Cerebral arterial fenestrations.

Daniel L Cooke1, Charles E Stout2, Warren T Kim2

  • 1Department of Radiology & Biomedical Imaging, University of California; San Francisco, CA, USA - daniel.cooke@ucsf.edu.

Interventional Neuroradiology : Journal of Peritherapeutic Neuroradiology, Surgical Procedures and Related Neurosciences
|July 1, 2014
PubMed
Summary
This summary is machine-generated.

Cerebral arterial fenestrations, an anatomic variant, occur in 2.1% of patients. While often found in the posterior circulation, they show no definitive link to aneurysms or subarachnoid hemorrhage.

Keywords:
anatomyaneurysmfenestrationstrokesubarachnoid hemorrhage

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Area of Science:

  • Neurology
  • Vascular Neurology
  • Neuroradiology

Background:

  • Cerebral arterial fenestrations are anatomical variations with unclear clinical significance.
  • Previous studies have yielded controversial findings regarding their association with cerebrovascular anomalies.

Purpose of the Study:

  • To determine the prevalence of cerebral arterial fenestrations in a clinical practice.
  • To investigate the association between fenestrations and other cerebrovascular anomalies, particularly aneurysms and subarachnoid hemorrhage.

Main Methods:

  • Retrospective review of 10,927 digital subtraction angiographies (1992-2011).
  • Searched dictated reports for "fenestration" or "fenestrated" and reviewed images.
  • Conducted a Medline search (1964-2013) to supplement case analysis.

Main Results:

  • Cerebral arterial fenestrations were identified in 228 patients (2.1%).
  • Aneurysms were present in 60.5% of patients; 19.6% arose from fenestrations.
  • Fenestrations were more common in the posterior circulation (73.2%) than anterior (24.6%), with no significant difference in aneurysm prevalence between locations.

Conclusions:

  • Cerebral arterial fenestrations are an uncommon anatomic variant.
  • Fenestrations commonly occur at the anterior communicating artery and basilar artery.
  • No definitive pathological relationship was found between fenestrations and aneurysms or subarachnoid hemorrhage.