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Free Content Content loaded within last 14 days Vein of Galen Aneurysmal Malformations: An Overview for the Diagnostic Neuroradiologist

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Vein of Galen aneurysmal malformations are rare direct arteriovenous fistulas between choroidal and/or quadrigeminal arteries and a midline venous pouch, which corresponds with persistence of the embryonic median prosencephalic vein of Markowski. We present an overview of the pathogenesis and angioarchitecture of these malformations. We also discuss their hydrovenous and hemodynamic complications, as well as the associated congenital and acquired vascular anomalies. A brief overview of their clinical presentation and treatment strategies is also presented. A better understanding of these rarely encountered vascular malformations, it is hoped, will facilitate interpretation of the frequently complex imaging studies of these patients.

Learning Objective: Understand the anatomy of vein of Galen malformations and identify their hydrovenous complications and associated congenital and acquired vascular anomalies.
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Keywords: VGAM = Vein of Galen aneurysmal malformation

Document Type: Research Article

Publication date: August 1, 2019

This article was made available online on July 17, 2019 as a Fast Track article with title: "Vein of Galen Aneurysmal Malformations: An Overview for the Diagnostic Neuroradiologist".

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  • Neurographics is the peer-reviewed, bimonthly educational journal of the American Society of Neuroradiology. The journal comprises articles selected from material presented at the ASNR Annual Meeting. Neurographics also publishes other high-quality submissions that are primarily educational and have a high emphasis on a pictorial approach. Neurographics offers CME credit for reading review articles and completing quiz-based self-assessment activities. CME credit for review articles may be claimed up to 3 years after an article's publication date. Visit to view all available CME courses.
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