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Aneurysm, brain

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An aneurysm is a localized widening (dilatation) of an artery, vein, or the heart.

At the area of an aneurysm, there is typically a bulge and the wall is weakened and may rupture.

The word 'aneurysm' comes from the Greek 'aneurysma' meaning 'a widening.' A brain aneurysm is a small aneurysm that looks like a berry and classically occurs at the point at which a cerebral artery departs from the circular artery (the circle of Willis) at the base of the brain.

Brain aneurysms rupture frequently and bleed.

Also called a berry aneurysm

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