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left: normal abdominal aorta
right: abdominal aortic aneurysm
an·eu·rysmalso an·eu·rism (ăn′yə-rĭz′əm)
An abnormal, blood-filled sac formed by dilation of the wall of a blood vessel or heart ventricle, most commonly the abdominal aorta and intracranial arteries, resulting from disease or trauma to the wall, as in atherosclerosis.
[Middle English aneurisme, ultimately from Greek aneurusma, from aneurein, to dilate : ana-, throughout; see ana- + eurus, wide.]
an′eu·rys′mal (-məl) adj.
a disease of the artery wall that causes a localized dilatation of the artery and a pulsating tumor.See also: Blood and Blood Vessels
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|Noun||1.||aneurism - a cardiovascular disease characterized by a saclike widening of an artery resulting from weakening of the artery wall|
cardiovascular disease - a disease of the heart or blood vessels
aortic aneurysm - an aneurysm of the aorta
cerebral aneurysm - an aneurysm of the carotid artery
intracranial aneurysm - an aneurysm of a cranial artery
ventricular aneurysm - a localized dilation or protrusion on the wall of the left ventricle of the heart (occurring after a myocardial infarction)