aneurysm (redirected from venous aneurysm)

aneurysm /an·eu·rysm/ (an´u-rizm) a sac formed by localized dilatation of the wall of an artery, a vein, or the heart.aneurys´mal

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aortic aneurysm  aneurysm of the aorta.

arteriosclerotic aneurysm  an aneurysm arising in a large artery, usually the abdominal aorta, as a result of weakening of the wall in severe atherosclerosis.

arteriovenous aneurysm  abnormal communication between an artery and a vein in which the blood flows directly into a neighboring vein or is carried into the vein by a connecting sac.

atherosclerotic aneurysm  arteriosclerotic a.

berry aneurysm  a small saccular aneurysm of a cerebral artery, usually at the junction of vessels in the circle of Willis, having a narrow opening into the artery.

compound aneurysm  one in which some of the layers of the wall of the vessel are ruptured and some merely dilated.

dissecting aneurysm  one resulting from hemorrhage that causes longitudinal splitting of the arterial wall, producing a tear in the intima and establishing communication with the lumen; it usually affects the aorta (aortic dissection).

false aneurysm 

1. one in which the entire wall is injured and the blood is retained in the surrounding tissues; a sac communicating with the artery (or heart) is eventually formed.

2. pseudoaneurysm.

infected aneurysm  one produced by growth of microorganisms (bacteria or fungi) in the vessel wall, or infection arising within a preexisting arteriosclerotic aneurysm.

mycotic aneurysm  an infected aneurysm caused by fungi.

racemose aneurysm  dilatation and tortuous lengthening of the blood vessels.

saccular aneurysm , sacculated aneurysm a distended sac affecting only part of the arterial circumference.

varicose aneurysm  one in which an intervening sac connects the artery with contiguous veins.

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an·eu·rysm or an·eu·rism (ny-rzm) n. A localized, blood-filled dilation of a blood vessel caused by disease or weakening of the vessel wall. aneu·rysmal (-ml), aneu·ris·matic (-mtk) adj.

aneurysm abdominal aortic aneurysm

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Aneurysm

A weak point in a blood vessel where the pressure of the blood causes the vessel wall to bulge outwards. An aneurysm may also appear as a sac-like projection from the blood vessel wall.

Mentioned in: Aneurysmectomy, Arteriovenous Malformations, Barbiturate-Induced Coma, Cardiac Blood Pool Scan, Cardiac Catheterization, Computed Tomography Scans, Hemoptysis, Kawasaki Syndrome, Lithotripsy, Stroke, Subarachnoid Hemorrhage, Vasculitis

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aneurysm

[an′yoo͡riz′əm]

Etymology: Gk, aneurysma, widening

a localized dilation of the wall of a blood vessel. It may be caused by atherosclerosis and hypertension, or less frequently, by trauma, infection, or a congenital weakness in the vessel wall. Aneurysms are common in the aorta but also occur in peripheral vessels, especially in the popliteal arteries of older people. A sign of a large arterial aneurysm is a pulsating swelling that produces a blowing murmur on auscultation. Small aneurysms may produce no sound at all. An aneurysm may rupture, causing hemorrhage, or thrombi may form in the dilation and give rise to emboli that may obstruct smaller vessels. Aneurysms are usually named by the area in which they occur. Kinds of aneurysms include aortic, bacterial, berry, cerebral, compound, dissecting, fusiform, mycotic, racemose, Rasmussen's, saccular, varicose, and ventricular aneurysm. Also called vascular tumor. See also pseudoaneurysm. aneurysmal, adj.

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aneurysm (an·y·riˑ·zm),

n bulging area of a blood vessel wall caused by weakness, or thinning in the wall's structure.

Aneurysm.

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aneurysm (an´yōōrizm),

n a localized dilation of an artery in which one or more layers of the vessel walls are distended.

aneurysm, arteriovenous,

n See shunt, arteriovenous.

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aneurysm

a sac formed by the localized dilatation of the wall of an artery, vein or the heart.

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aortic aneurysm

see aortic aneurysm.

arteriovenous aneurysm

an abnormal communication between an artery and a vein in which the blood flows directly into a neighboring vein or is carried into the vein by a connecting sac.

atherosclerotic aneurysm

one arising as a result of weakening of the tunica media in severe atherosclerosis.

bacterial aneurysm

an infected aneurysm caused by bacteria.

berry aneurysm

a small saccular aneurysm of a cerebral artery, usually at the junction of vessels in the circle of Willis; such aneurysms frequently rupture, causing subarachnoid hemorrhage. Called also brain aneurysm.

cardiac aneurysm

thinning and dilatation of a portion of the wall of the left ventricle, usually a consequence of myocardial infarction.

cirsoid aneurysm

dilatation and tortuous lengthening of part of an artery.

compound aneurysm

one in which some of the layers of the wall of the vessel are ruptured and some merely dilated. Called also mixed aneurysm.

congenital aneurysm

observed sporadically in the aorta and pulmonary artery.

dissecting aneurysm

one resulting from hemorrhage that causes lengthwise splitting of the arterial wall, producing a tear in the inner wall (intima) and establishing communication with the lumen of the vessel; it usually affects the thoracic aorta. Seen most commonly in horses and caused by larvae of Strongylus vulgaris. See strongylosis. A specific disease of turkeys.

fusiform aneurysm

a spindle-shaped aneurysm.

infected aneurysm

one produced by growth of microorganisms (bacteria or fungi) in the vessel wall, or infection arising within a pre-existing arteriosclerotic aneurysm.

inherited aortic aneurysm

causes a high mortality rate in the affected cattle breed. The defect is in the abdominal aorta.

lung aneurysm

may result from the lodgement of pulmonary emboli; rupture and pulmonary hemorrhage are potential sequelae.

mixed aneurysm

compound aneurysm.

mycotic aneurysm

an infected aneurysm caused by fungi.

pseudoaneurysm

false aneurysm.

racemose aneurysm

cirsoid aneurysm.

sacculated aneurysm

a saclike aneurysm.

varicose aneurysm

one formed by rupture of an aneurysm into a vein. See also aneurysmal varix.

venous aneurysm

see venous dilatation.

verminous aneurysm

see strongylosis.

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aneurysm 

A localized dilatation of the walls of a blood vessel, usually an artery, as a result of infection, injury or degeneration. It is filled with fluid or clotted blood. Aneurysms occur in diabetic retinopathy, and retinal veinocclusion leading to haemorrhages and oedema.

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aneurysm

Surgery A weakened or attentuated site on the wall of an artery, a vein or the ventricle, which has stretched or ballooned and filled with blood or, in an artery, resulting in a splitting of the wall, leading to pooling of blood in the vessel wall Clinical Pulsating mass, bruit–aneurysmal bruit over the swelling, ± symptoms from pressure on contiguous parts. See Abdominal aortic aneurysm, Aortic aneurysm, Berry aneurysm, Cerebral aneurysm, Mycotic aneurysm, Ruptured aortic aneurysm.

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Patient discussion about venous aneurysm.

Q. Could I be going through a Brain aneurysm? i woke up in the night with a bad headache in the back of my head and above my eye. never had a headache like that. but all day today have not had the headache. could this be an aneurysm?

A. An Aneurysm is when a blood vessel just pops out in you’re brain. Very ironically, there are no sensory nerves inside the brain and the headache that comes with aneurysm is when the brain starts pressuring the material that surrounds it. That means this will be a later symptoms and you’ll probably have a paralyses before, or have problem speaking and things like that. If you are not convinced – you can go to the hospital and ask for a scan.

Q. Is there a good screening test for aortic abdominal aneurysm? A friend of mine was diagnosed with an aortic abdominal aneurysm. I am afraid i might have this condition too. is there any screening test that is good for me?

A. The answer to your question depends on your age your sex and your history of smoking. 3 years ago when my husband was diagnosed with an aortic abdominal aneurysm our GP said that the screening is good only for males age 65-75 that smoke.
Go to your GP and ask him even if you are not in those criteria, maybe the rules have changed.

Q. What are the causes of aneurysm?

A. An aneurysm can result from atherosclerosis (hardening and narrowing of the inside of arteries). As atherosclerosis develops, the artery walls become thick and damaged and lose their normal inner lining. This damaged area of artery can stretch or "balloon" from the pressure of blood flow inside the artery, resulting in an aneurysm.

An aneurysm also can develop from constant high blood pressure inside an artery.

A thoracic aortic aneurysm can result from an injury to the chest (for example, an injury that occurs from an auto crash). Certain medical conditions, such as Marfan syndrome, that weaken the body's connective tissues, also can cause aneurysms. http://www.nhlbi.nih.gov/health/dci/Diseases/arm/arm_causes.html

These may be of use also:
http://www.health.uab.edu/14537/
http://www.lancastergeneral.org/content/greystone_36293.htm
Hope this helps.