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 ORIGINAL ARTICLE
Year : 2014  |  Volume : 62  |  Issue : 1  |  Page : 15--18

Long-term outcomes of trapping vertebral artery-posterior inferior cerebellar artery dissecting aneurysms after revascularization


1 Department of Neurosurgery, 1st Affiliated Hospital of Kunming Medical University, Kunming 650031, China
2 Department of Neurosurgery, Fu Xing Hospital Affiliated to Capital Medical University, Beijing 100038, China

Correspondence Address:
Zhiwei Tang
Department of Neurosurgery, 1st Affiliated Hospital of Kunming Medical University, 295 Xichang Road, Kunming 650032
China
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Source of Support: This study was funded in part by the National Science Foundation of China (81360204 to Zhiwei Tang), Conflict of Interest: None


DOI: 10.4103/0028-3886.128247

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Objective: This study is designed to evaluate the long-term outcome of trapping vertebral artery-posterior inferior cerebellar artery (VA-PICA) dissecting aneurysms after revascularization. Materials and Methods: Five patients with VA-PICA dissecting aneurysms were treated surgically between 2007 and 2010. All the aneurysms were trapped through a far-lateral approach after revascularization of the PICAs by occipital artery-posterior inferior cerebellar artery (OA-PICA) bypass. All patients were scheduled for clinical follow-up in the out-patient department at 3 months, 6 months, then annually. Computed tomography (CT) scan and CT angiography, or magnetic resonance (MR) imaging and MR angiography were performed to assess the anastomosis and cerebral blood supply. Results: Among the five patients, two of them did not have any neurological deficit after surgery, the other three had post-operative lower cranial nerve palsy but recovered completely within 6 months. Post-operative cerebral angiography (received by two patients) and CT angiography (received by the other three patients) showed patent bypasses in all patients and there was no reappearance of the aneurysms. After following-up from 47 to 74 months (61 month is the median follow-up period), all patients showed excellent outcomes. Conclusion: Trapping the aneurysms after revascularization of PICAs by OA-PICA bypass is a safe method to treat the VA-PICA dissecting aneurysms.






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