Definition: Angiitis: inflammation in blood vessels caused by blocked arteries, commonly seen in elderly patients with diabetes. Detailed definition includes: 1) Aneurysm is a type of aneurism where the wall breaks away from a normal blood vessel and forms a pocket of fluid, usually causing pain and swelling around the site of the aneurysm. 2) Atherosclerosis occurs when the walls of arteries become thickened, making them more difficult to open or close for blood flow. 3) Aneurysms can develop in any part of the body, but they are most common in the brain, heart, and lungs, often causing symptoms like pain, nausea, and difficulty breathing.
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