title: Angiographically undetected ulceration of the carotid bifurcation as a cause of embolic stroke.
abstract: The accuracy of angiographic diagnosis of carotid artery ulceration was evaluated. Of those carotid bifurcations showing ulceration at surgery, 60% were diagnosed as having ulcers at angiography. Half of the remaining ulcers occurred in smooth, benign-appearing plaques and were too small to be seen at angiography. An incorrect angiographic diagnosis of ulceration was made in 17 of 50 carotid arteries; in most cases this was due to the presence of a subintimal hematoma in the wall of the artery.
mesh_terms: D002340:Carotid Artery Diseases / Q000150:complications* / Q000000981:diagnostic imaging; D002533:Cerebral Angiography; D005188:False Negative Reactions; D005189:False Positive Reactions; D006406:Hematoma / Q000000981:diagnostic imaging; D006801:Humans; D002542:Intracranial Embolism and Thrombosis / Q000209:etiology*; D014456:Ulcer / Q000150:complications / Q000000981:diagnostic imaging