MCQ – 90323

The most common site of acute aortic dissection is:

A.	Right lateral wall of ascending aorta
B.	Arch of aorta
C.	Suprarenal abdominal aorta
D.	Infrarenal abdominal aorta

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Correct Answer � A Explanation

Answer- A

• Aortic dissection is caused by a circumferential or, less frequently, transverse tear of the intima.
• MC site: Right lateral wall of the ascending aorta
• Another common site: Descending thoracic aorta (just below the ligamentum arteriosum).
• Peak incidence: 6th and 7th decades.
• Men are more commonly affected