Aims: The effect of carotid endarterectomy on the patency of the external carotid artery is unknown. We conducted a retrospective study to evaluate the long-term changes in the external carotid ...

There are four carotid arteries: the right and left internal carotid arteries and the right and left external carotid arteries. One pair (external and internal) is located on each side of the neck.

The image to the right (Figure 1) shows an image of a carotid artery in the neck where it divides into the artery of the external carotid artery (smaller vessel on the right) and the internal carotid ...