A pathological permanent dilation of an artery wall that is usually uniform in shape,but can resemble a sac or outpouching,is termed:

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An aneurysm such as aortic is a pathological permanent dilation of the aortic wall involving any number of segments of the aorta of at least 1.5 times the expected normal diameter.The aneurysm is usually uniform in shape,although some aneurysms form a sac or outpouching of a portion of the artery.

A Pathological Permanent Dilation of an Artery Wall That Is