title: Stenosis or Occlusion of the Right Subclavian and Common Carotid Arteries Is More Common than That of the Innominate Artery in Takayasu Arteritis.
abstract: OBJECTIVE
  The aim of this study was to introduce the phenomenon that stenosis or occlusion occurs less frequently in the innominate artery than in the right subclavian and common carotid arteries, which are not first-order branches of the aorta, in Takayasu arteritis (TA).
  
  
  METHODS
  We retrospectively reviewed the medical records and image findings of all patients who were diagnosed with TA from 2006 to 2014. Two vascular surgeons and two radiologists interpreted the images by disease character, location, and extent of occlusion based on computed tomography angiography, magnetic resonance angiography, or digital subtraction arteriography. We have also reviewed the literature on arterial involvement in TA.
  
  
  RESULTS
  A total of 42 patients were diagnosed with TA. The mean age was 43.9 years, and 83.3% (35/42) of the patients were women. The left subclavian artery was the most common stenosis or occlusion site (17, 40.5%) among the aortic branches. The innominate artery was a less common site (3, 7.1%) than the right subclavian artery (4, 9.5%) and the right common carotid artery (9, 21.4%). All innominate artery cases were found after endovascular procedures of the right subclavian or common carotid arteries.
  
  
  CONCLUSIONS
  The innominate artery might develop stenosis or occlusion less frequently than the right subclavian and common carotid arteries in Korean TA patients.
authors.affiliation: Department of Surgery and, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea.
authors.forename: Bong Won
authors.initials: BW
authors.lastname: Park
authors.affiliation: Department of Surgery and, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea.
authors.forename: Sang Jun
authors.initials: SJ
authors.lastname: Park
authors.affiliation: Department of Surgery and, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea.
authors.forename: Hojong
authors.initials: H
authors.lastname: Park
authors.affiliation: Department of Radiology, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea.
authors.forename: Jae Chol
authors.initials: JC
authors.lastname: Hwang
authors.affiliation: Department of Radiology, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea.
authors.forename: Young Woo
authors.initials: YW
authors.lastname: Seo
authors.affiliation: Department of Surgery and, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea.
authors.forename: Hong Rae
authors.initials: HR
authors.lastname: Cho
keywords: Aorta; Brachiocephalic trunk; Cerebrovascular disorders; Pathologic constriction; Takayasu arteritis