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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.


(ˈænjəˌrɪzəm) or


(Medicine) a sac formed by abnormal dilation of the weakened wall of a blood vessel
[C15: from Greek aneurusma, from aneurunein to dilate, from eurunein to widen]
ˌaneuˈrysmal, ˌaneuˈrismal, ˌaneurysˈmatic, ˌaneurisˈmatic adj
ˌaneuˈrysmally, ˌaneuˈrismally, ˌaneurysˈmatically, ˌaneurisˈmatically adv


or an•eu•rism

(ˈæn yəˌrɪz əm)

a permanent cardiac or arterial dilatation usu. caused by weakening of the vessel wall.
[1650–60; < Greek aneúrysma dilation, derivative (with -(s)ma n. suffix of result) of aneurýnein to dilate (see an-3, eury-)]
an`eu•rys′mal, an`eu•ris′mal, adj.
an`eu•rys′mal•ly, an`eu•ris′mal•ly, adv.


A swelling in the wall of an artery or vein caused by disease or injury.

aneurism, aneurysm

a disease of the artery wall that causes a localized dilatation of the artery and a pulsating tumor.
See also: Blood and Blood Vessels
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.aneurysm - a cardiovascular disease characterized by a saclike widening of an artery resulting from weakening of the artery wallaneurysm - 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)


n. aneurisma, dilatación de una porción de la pared de una arteria;
aortic ______ aórtico;
berry ______ cerebral saculado;
cerebral ______ cerebral;
dissecting ______ disecante;
false ______ falso;
fusiform ______ fusiforme;
true ______verdadero.


n aneurisma m; abdominal aortic — aneurisma aórtico abdominal, aneurisma de aorta abdominal; dissecting — aneurisma disecante; mycotic — aneurisma micótico
References in periodicals archive ?
The global market for EVAR infrarenal endovascular abdominal aortic aneurysms repair devices is growing at a steady pace and has recorded a revenue of USD 1.
Aside from the risk of rupture, sciatic artery aneurysms pose a risk of distal embolization and subsequent limb loss (4).
Abdominal venous aneurysms in general carry risks for developing complications, such as pulmonary embolism, abdominal pain, and intra-abdominal bleeding.
com)-- While most aneurysms are sporadic, there are families in which the incidence of aneurysms is higher than in the general population.
The UK-wide AAA programme aims to reduce the number of deaths from burst aneurysms by means of early detection, appropriate monitoring and treatment.
Older men who are current or former smokers have the highest risk for abdominal aortic aneurysm, and screening and surgery to repair these aneurysms can reduce the number of deaths caused by this condition, the task force concluded.
Nussbaum, a neurosurgeon at the National Brain Aneurysm Center, offers residents, fellows, and neurosurgeons this atlas, which explains how to perform surgical procedures for intracranial aneurysms and is accompanied by two DVDs containing 57 videos for demonstration.
Dorsalis pedis artery (DPA) aneurysms, though uncommon, are well recognized clinical presentation and it was first described by Cuff in 1907 (1).
WOMEN who take the Pill or HRT could have greater protection against brain aneurysms, according to a new study.
Maple Grove-based Neurovasx's cPAX Aneurysm Treatment System is for surgery on brain aneurysms that are difficult to manage because of their size and shape.
Rabih Chaer, a vascular surgeon at the University of Pittsburgh, and his colleagues found that, among 1,082 patients who were diagnosed with abdominal aortic aneurysms (AAA) who had chest CT at follow-up, 23.