Transient ischemic attacks with external carotid artery stenosis and a normal internal carotid artery.
Transient ischemic attacks have been attributed to emboli from the external carotid artery in patients with complete occlusion of the internal carotid artery. We report a patient with an external carotid stenosis and normal internal carotid who developed ipsilateral transient ischemic attacks. Real time B-mode ultrasonography demonstrated that the plaque obstructing the external carotid artery extended into the carotid sinus. This may have served as a source of emboli into the internal carotid circulation.
D000368:Aged; D002341:Carotid Artery Thrombosis / Q000150:complications* / Q000175:diagnosis; D002342:Carotid Artery, External; D001026:Coronary Artery Bypass; D005260:Female; D006801:Humans; D002546:Ischemic Attack, Transient / Q000209:etiology*; D010974:Platelet Aggregation / Q000187:drug effects; D014463:Ultrasonography