Plasma Cell Infiltrates in Atherosclerotic Abdominal Aortic Aneurysms

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Abstract
Thirty-one of 156 abdominal aortic resection specimens containing atherosclerotic aneurysm wall had an inflammatory infiltrate with a prominent plasma cell component of the media or of plaque replacing the media. The specimens in general were not examples of the so-called “inflammatory variant” of atherosclerotic aneurysm. No association between the infiltrate and syphilis, collagen vascular disease, furosemide exposure, chronic aneurysm leakage, aneurysm diameter, or duration of symptoms was found. The plasmacytic inflammation may be part of an immune response to atherosclerosis.