Pseudo-occlusion of the internal carotid artery: how not to miss it

Although pseudo-occlusion of the internal carotid artery has been previously reported, it is not widely appreciated. The purpose of this report is to demonstrate methods of making the diagnosis. We present two cases illustrating the angiographic findings in pseudo-occlusion of the internal carotid artery. Its recognition is important to the vascular surgeon in making recommendations for surgery.