Aneurysms of the extracranial internal carotid artery.

Aneurysm of the carotid artery is a rare pathology. According to the modern concepts, aneurysm of the artery is classified as a local enlargement of its diameter, namely by over than 50% as compared to the adjacent unchanged segment. In addition to the establishment as to whether aneurysm is present, the aims of examination consist in specification of the site, size, presence and extent of the interluminal thrombus.