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Medical Dictionary

berry aneurysm

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noun ber·ry aneurysm \ˈber-ē-\

Medical Definition of berry aneurysm

: an aneurysm of a cerebral artery that resembles a berry or sac in shape and typically occurs at an arterial junction in the circle of Willis The culprit is a berry aneurysm, a slight (one-eighth to one-third of an inch) ballooning of the artery in the circle of Willis …—Tony Dajer, Discover, March 2009

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