You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is 70 year old man has abdominal pain with mass in abdomen. Angiography reveals aneurysm of aorta. Most likely cause is: and explain in detail?
Ans. is 'b' Atherosclerosis Most common cause of abdominal aortic aneurysm - Atherosclerosis (90%).Other frequently asked questions about aortic aneurysm.Most common cause of aortic aneurysm (overall) = Atherosclerosis. *Most common cause of ascending aortic aneurysm = Cystic medial necrosis. *Most common cause of descending aortic aneurysm = Atherosclerosis. *Most common cause of aneurysm of aortic arch = Atherosclerosis. *Syphilitic aneurysm affect = Ascending aorta. *Aneurysm of Takayasu arteritis affects = Aortic arch. *