Abstract
Percutaneous transluminal angioplasty was used to successfully dilate critical narrowings of the internal carotid artery caused by fibromuscular dysplasia. The technique of this new procedure is presented along with the angiographic findings and results in three patients. Angioplasty may be used as an alternative to open arteriotomy and graduated dilatation in treating stenosis due to symptomatic fibromuscular dysplasia in the immediate extracranial part of the internal carotid artery.