Carotid artery entrapment by the hyoid bone.

Abstract

We report a patient with a transient ischemic attack presumably caused by an entrapment of the internal carotid artery by the hyoid bone and without a significant carotid artery stenosis. The patient was operated on, with a release of the right internal and external carotid artery and resection of the right greater cornu of the hyoid bone. One year after treatment, the patient has not experienced any further neurologic symptoms, and a color duplex scan showed no stenosis of the right carotid artery. The hyoid bone is a potential cause of damage to the carotid vessels, depending on the individual's anatomy. Provocative maneuvers can be performed in patients with cerebrovascular symptoms who are not demonstrated to have significant anatomic stenosis with carotid imaging.