title: Endovascular Treatment of Intracranial Vertebral Artery Dissecting Aneurysms: Follow up Angiographic and Clinical Results of Endovascular Treatment in Serial Cases.
abstract: OBJECTIVE
  To report angiographic and clinical results of endovascular treatment in 45 intracranial vertebral artery dissecting aneurysms (VADAs).
  
  
  METHODS
  From July 2002 to September 2013, a total of 42 patients with 45 VADAs received endovascular treatment. Endovascular treatment consisted of internal trapping with detachable coils, stent-assisted coiling, and stenting only. Immediate and follow-up angiographic findings and clinical outcome were retrospectively reviewed.
  
  
  RESULTS
  There were 17 ruptured VADAs and 28 unruptured VADAs. Overall, 26 VADAs were treated with internal trapping, 14 with stent-assisted coil embolization, and 5 with stenting only. Immediate angiographic results revealed complete occlusion in 31 cases and incomplete occlusion in 14 cases. Follow-up imaging studies were available in 31 cases. On follow-up imaging, antegrade recanalization occurred in 2 of 16 cases treated with internal trapping. Aneurysmal recurrence occurred in one case treated with stent-assisted coiling. Procedural complications occurred in 8 patients. In cases of unruptured VADA, favorable outcome (mRS 0 and 1) was achieved in 26 cases and poor outcome (mRS 2-5) in 2 cases. There was no mortality in patients with unruptured VADAs.
  
  
  CONCLUSIONS
  Endovascular treatment of intracranial VADA appears to be safe and effective. Follow-up angiographic study is needed because parent artery recanalization or aneurysmal recurrence can occur.
authors.affiliation: Department of Diagnostic Radiology, Busan Paik Hospital, Inje University, Busan, Korea.
authors.forename: Gi Won
authors.initials: GW
authors.lastname: Shin
authors.affiliation: Department of Diagnostic Radiology, Busan Paik Hospital, Inje University, Busan, Korea.
authors.forename: Hae Woong
authors.initials: HW
authors.lastname: Jeong
keywords: Coil embolization; Dissecting aneurysm; Endovascular treatment; Vertebral artery