Bilateral internal carotid artery aneurysms.

Two patients were treated for bilateral internal carotid artery aneurysms. One had resection and restoration of continuity on the right side nine years after ligation of the left internal carotid artery. The second had sequential resection and reconstruction of both vessels. Complications of carotid aneurysms include embolization, rupture, and thrombosis. Preferred treatment is resection with reconstitution of the flow. Patients with carotid aneurysms should be investigated for similar lesions on the opposite side. Patients who have had one carotid aneurysm treated should be followed up for the possible occurrence of a contralateral aneurysm.