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Aneurysm

(Science: anatomy, surgery) a sac formed by the dilatation of the wall of an artery, a vein or the heart.

The physical signs of arterial aneurysm are the formation of a pulsating tumour and often a bruit (aneurysmal bruit) heard over the swelling. Sometimes there are symptoms from pressure on contiguous parts.

Origin: gr. Aneurysma = a widening a cardiovascular disease characterized by a sac-like widening of an artery resulting from weakening of the artery wall.