title: Atherosclerotic subintimal hematoma of the carotid artery.
abstract: A presumed new radiological-pathological entity of atherosclerotic subintimal of the carotid artery is described. Subintimal hematomas were found in 12 of 50 (24%) carotid bifurcations during surgery for repeated transient ischemic attacks in a single hemispheric distribution; only 33% were associated with ulcerations. The typical angiographic appearance was a sharply marginated, rounded, eccentric filling defect located near the extracranial carotid bifurcation, although occasionally it may simulate a typical smooth or even ulcerated atherosclerotic plaque. Pathological mechanisms responsible for the hemorrhage into the atherosclerotic plaque resulting in the hematoma are discussed.
mesh_terms: D001161:Arteriosclerosis / Q000150:complications / Q000000981:diagnostic imaging* / Q000473:pathology; D002339:Carotid Arteries / Q000000981:diagnostic imaging / Q000473:pathology; D002340:Carotid Artery Diseases / Q000000981:diagnostic imaging* / Q000473:pathology; D006406:Hematoma / Q000000981:diagnostic imaging* / Q000209:etiology / Q000473:pathology; D006801:Humans; D011859:Radiography; D014456:Ulcer / Q000000981:diagnostic imaging / Q000209:etiology / Q000473:pathology