title: Percutaneous transluminal angioplasty in a patient with internal carotid artery stenosis following gamma knife radiosurgery for recurrent pituitary adenoma.
abstract: BACKGROUND
  Intracranial vascular complications following radiosurgery are extremely rare.
  
  
  METHODS
  We report a case of stenosis in the internal carotid artery 5 years after gamma knife radiosurgery for a recurrent pituitary adenoma. Percutaneous transluminal angioplasty was performed successfully with anatomical and functional improvement.
  
  
  CONCLUSIONS
  These results suggested the importance of monitoring for arterial stenosis in the long-term follow-up. Moreover, this is the first case of endovascular treatment as an effective therapy for intracranial arterial stenosis due to radiotherapy.
authors.affiliation: Department of Neurosurgery, St. Marianna University School of Medicine, Yokohama, Kanagawa, Japan.
authors.forename: Hidemichi
authors.initials: H
authors.lastname: Ito
authors.affiliation: Department of Neurosurgery, St. Marianna University School of Medicine, Yokohama, Kanagawa, Japan.
authors.forename: Hidetaka
authors.initials: H
authors.lastname: Onodera
authors.affiliation: Department of Neurosurgery, St. Marianna University School of Medicine, Yokohama, Kanagawa, Japan.
authors.forename: Taigen
authors.initials: T
authors.lastname: Sase
authors.affiliation: Department of Neurosurgery, St. Marianna University School of Medicine, Yokohama, Kanagawa, Japan.
authors.forename: Masashi
authors.initials: M
authors.lastname: Uchida
authors.affiliation: Department of Neurosurgery, Kawasaki Municipal Tama Hospital, Yokohama, Kanagawa, Japan.
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Morishima
authors.affiliation: Department of Neurosurgery, St. Marianna University School of Medicine, Yokohama, Kanagawa, Japan.
authors.forename: Kotaro
authors.initials: K
authors.lastname: Oshio
authors.affiliation: Department of Neurosurgery, Yokohama Rosai Hospital, Yokohama, Kanagawa, Japan.
authors.forename: Takashi
authors.initials: T
authors.lastname: Shuto
authors.affiliation: Department of Neurosurgery, St. Marianna University School of Medicine, Yokohama, Kanagawa, Japan.
authors.forename: Yuichiro
authors.initials: Y
authors.lastname: Tanaka
keywords: Angioplasty; endovascular treatment; gamma knife radiosurgery; internal carotid artery stenosis; pituitary adenoma