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left: normal abdominal aorta
right: abdominal aortic aneurysm


also 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.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.aneurysmal - relating to or affected by an aneurysmaneurysmal - relating to or affected by an aneurysm


, aneurysmatic
a. aneurismal, rel. a un aneurisma.
References in periodicals archive ?
CT revealed that the ascending aorta was dilated aneurysmally to about 7cm in di- ameter, with type A dissection (Fig-1).
The patient underwent computed tomography (CT) scan of the head, which showed obstructive hydrocephalus and an aneurysmally dilated vein of Galen, a stenotic straight sinus, and a distended torcular Herophili.
Additional non-atherosclerotic coronary abnormalities detectable by MSCT angiography include the intramyocardial course of a coronary artery due to a myocardial bridge and aneurysmally dilated coronary arteries with or without thrombi.