Abdominal aortic aneurysm

Abdominal aortic aneurysm, also written as AAA and often pronounced 'triple-A', is a localized dilatation of the abdominal aorta, that exceeds the normal diameter by more than 50%. The normal diameter of the infrarenal aorta is 2 cm. It is caused by a degenerative process of the aortic wall, however the exact etiology remains unknown. It is most commonly located (90%), other possible locations are and . The aneurysm can extend to include one or both of the iliac arteries. An aortic aneurysm may also occur in the thorax.
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Abdominal aortic aneurysm A focal aortic dilation of ≥ 50% ↑ in diameter, accompanied by distension and weakened aortic wall Epidemiology [more]Abdominal aortic aneurysm - Community and Resources

Noun
1. an aneurysm of the abdominal aorta associated with old age and hypertension
(synonym) AAA
(hypernym) aortic aneurysm

ANEURISMA AORTICO ADDOMINALE