<prompt> A 62-year-old man is discovered to have hyperlipidemia on screening tests after a routine physical examination. Laboratory studies show total serum cholesterol of 285 mgdL, LDL of 215 mgdL, HDL of 38 mgdL, and triglycerides of 300 mg dL. This patient is most at risk of developing an aneurysm in which of the following anatomic locations?Abdominal aortaAscending aortaCircle of WillisCoronary artery  <response>: Abdominal aortic aneurysms, which are defined as an increase in aortic diameter of 50 or more, are the most frequent aneurysms, usually developing after the age of 50 years. The most common cause of these abdominal aortic aneurysms is atherosclerosis. Aneurysms secondary to atherosclerosis are less common in the other anatomic locations listed.Diagnosis: Atherosclerosis 