Seven cases of fibromuscular dysplasia, six of them of the carotid artery and one of the vertebral artery studied by angiography are reported. The clinical histories have been of ischemic cerebro-vascular accident in five patients and of subarachnoidal hemorrhage dependent on ruptured aneurism in the others. Two patients underwent surgery: a primitive carotid ligation in one and, in the other, an endarterectomy for ressection of an atheroma plaque of the contralateral carotid artery. The symptomatology, diagnosis and treatment are discussed, emphasizing the importance of the vertebral and carotid angiographic study in the cases in which there is a diagnosis of fibromuscular dysplasia in any other vascular territory.