Our Aneurysm (Brain) Main Article provides a comprehensive look at the who, what, when and how of Aneurysm (Brain)

Definition of Aneurysm

Aneurysm: A localized widening (dilatation) of an artery, a vein, or the heart. At the point of an aneurysm, there is typically a bulge. The wall of the blood vessel or organ is weakened and may rupture.


Last Editorial Review: 3/19/2012

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