Journal of Neuroendovascular Therapy
Online ISSN : 2186-2494
Print ISSN : 1882-4072
Case Reports
Endovascular Treatment for Basilar Artery Occlusion Caused by Radiation-induced Vertebral Artery Stenosis: Case Report
Kazuhiko TokumuraYoshiro ItoToshitsugu TerakadoTomoji TakigawaAiki MarushimaWataro TsurutaYuji MatsumaruAkira Matsumura
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2018 年 12 巻 5 号 p. 247-253

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Objective: We report endovascular treatment of a patient with acute basilar artery occlusion considered to be due to an embolus from radiation-induced vertebral artery stenosis.

Case Presentation: The patient was a 46-year-old male with a history of neck irradiation. He developed basilar artery occlusion. Temporary recanalization achieved by intravenous alteplase therapy and revascularization was followed by relapse. The origin of the vertebral artery was stenosed, and basilar artery was considered to have been embolized by a thrombus formed on the proximal side of the vertebral artery, where blood flow was stagnated due to reduced antegrade flow from the distal side of the stenotic vertebral artery and the increased collateral flow from the deep cervical artery. Recurrence of cerebellar infarction could be prevented by revascularization and occlusion of the parent artery.

Conclusion: Acute basilar artery occlusion considered to be due to an embolus from radiation-induced vertebral artery stenosis is a rare condition, but it must be recognized as a possible cause of posterior circulation infarction.

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