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| acute aortic syndrome ： ウィキペディア英語版 |
acute aortic syndrome
Acute aortic syndrome (AAS) describes a range of severe, painful, potentially life-threatening abnormalities of the aorta. These include aortic dissection, intramural thrombus, and penetrating atherosclerotic aortic ulcer. AAS can be caused by a lesion on the wall of the aorta that involves the tunica media, often in the descending aorta. It is possible for AAS to lead to acute coronary syndrome. The term was introduced in 2001.
==Causes==
Causes can include aortic dissection, intramural hematoma, penetrating atherosclerotic ulcer or a thoracic aneurysm that has become unstable. The potential causes of AAS are life-threatening and present with similar symptoms, making it difficult to distinguish the ultimate cause, though high resolution, high contrast computerised tomography can be used.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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