Spontaneous reversal of internal carotid artery occlusion: case report.

Spontaneous dissection of the internal carotid arteries, including those dissections resulting in total occlusion, may be a spontaneously reversible process. A patient who had angiographic evidence of bilateral complete internal carotid artery occlusions of different ages of onset illustrates this process. This case suggests certain considerations regarding the pathogenesis of these dissections.