[Ischemic cerebral vascular pathology. History and updating]

This is a contribution to the memory of Professor Román Arana Iñíguez. He, with Professor Néstor Azambuja made possible our participation, in the Joint Study of Extracranial Arterial Occlusion from the National Institutes of Health, with 23 U.S. Universities. This research was started on March 1963 and ended on June 1971. It was directed by Dr. Arana, who gave impetus to our work and to our active participation on the subject at meetings held in Uruguay and abroad. A brief historiography of the subject is made, with emphasis in the chronology of our advances as compared to those of other leading countries.