Background: The carotid arterial system which consists of right and left common carotid arteries is the main arterial supply of the head and neck. Studies show that variations exist to the level of bifurcation of the common carotid artery. Knowledge of these variations is of importance for surgical approaches in the head and neck region, such as carotid endarterectomy, radical neck dissection, catheterization etc, thereby reduce the risk of operative morbidity and mortality in patients undergoing operations, involving the common carotid artery.
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