[Spontaneous dissection of the extracranial internal carotid artery. Apropos of 3 cases. Usefulness of preventive occlusion-anastomosis].

Authors point out three observations of spontaneous dissection of cervical internal carotid artery (I.C.A.) with various evolution. They emphasize on evolutivity of residual aneurysms and necessity to purpose a preventive treatment of secondary projections.