Aneurysms of the internal carotid artery are dangerous lesions because of thromboembolism and, occasionally, rupture. The aneurysms enlarge slowly but relentlessly, and can also cause permanent pressure damage to nearby cranial nerves. Spontaneous cure by thrombosis is rare, and often is associated with stroke. Repair of the internal carotid artery with an interposition saphenous vein graft is the preferred treatment. Temporary inlying shunts and mandibular subluxation may be required in lesions that are near the base of the skull.
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