What is aneurysm?

Balooning of a vesse: Weakening of arterial wall causing aneurysm this can rupture and cause bleeding and complications depending on the location can be deadly consult a medical professional.

Vessel dilation: An abnormal dilation of a vascular structure vein or artery, anywhere in the body.

Aneurysm: Aneurysm is abnormal dilation of an artery: some say 1.5x normal size while others say twice or more the size of the native artery represents aneurysmal dilation. True aneurysm contains all the layers of the arterial wall while false aneurysm may have any or all components of the wall missing.