@article{oai:sapmed.repo.nii.ac.jp:00008102,
 author = {上山, 憲司 and 村橋, 威夫 and 大里, 俊明 and 佐々木, 雄彦 and 中川原, 譲二 and 武田, 利兵衛 and 中村, 博彦},
 issue = {1},
 journal = {北海道脳神経疾患研究所医誌 = Journal of Hokkaido Brain Research Foundation},
 month = {Mar},
 note = {We presented a case of dissecting of left vertebral artery. A 34 year-old man suffered from severe occipital headache. CT scan and FLAIR image on MRI demonstrated no evidence of intracranial hemorrhage. But MRA image revealed narrowing and dilation of left vertebral artery, and cerebral angiography confirmed the diagnosis of dissecting aneurysm of the left vertebral artery. Left posterior anterior cerebellar artery was not involved in dissecting artery. Because of neurological deficits except of mild headache, antiplatelete and anticoagulant therapy were administered conservatively. Three months later, MRA demonstrated aneurysmal enlargement and saccular aneurysmal formation of left vertebral artery. Though the patient had no clinical symptom, we decided surgical treatment that left dissecting aneurysm was trapped using two aneurysmal clips just proximal to posterior anterior cerebellar artery. Postoperative course was good. However, the patient suffered from sudden onset dizziness and admitted to our hospital. MRI showed right cerebellar infarction and angiography demonstrated right vertebral artery occlusion. After that, we treated the patient conservatively and he was discharge from our hospital with no neurological deficits one month later from second admission. Unilateral occlusion of the vertebral artery may increase hemodynamic vascular stress to contralateral vertebral artery. On occasion of planning in trapping of ipsilateral vertebral artery, follow-up angiography and/or MRA should be performed repeatedly to evaluate any change in aneurysm.},
 pages = {15--19},
 title = {椎骨動脈解離性動脈瘤に対しTrapping術後に対側椎骨動脈閉塞を来した1例},
 volume = {13},
 year = {2003}
}