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A 40-year-old member asked:

Is abdominal aortic aneurysm the same thing as aortic dissection?

3 doctor answers6 doctors weighed in
Dr. Mario Matos-Cruz
Thoracic Surgery 39 years experience
No. : Dissections may become aneurysmal. An abdominal aortic aneurysm is a full thickness dilatation of the aortic wall. In a dissection, there is a tear of the intima and the blood then shears the layers appart crating either 2 lumens or a mural hematoma or both.
Dr. Creighton Wright
General Surgery 56 years experience
No: Can happen together on occasion. Usually AAA does not "dissect" which is an intramural tear and hematoma. Other non aneurysmal vessels may tear with hypertension or degenerative vessel wall.
Dr. Kevin Nolan
Vascular Surgery 35 years experience
AAA v dissection: Not really; an aneurysm bulges due to a weakness in the artery wall. A dissection is a tear in one or more ( of the three) layers of the artery wall which continues in one or both directions.

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Last updated Apr 1, 2020

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