Vertebrobasilar junction aneurysms associated with fenestration: experience of five cases treated with Guglielmi detachable coils.
BACKGROUND
Fenestration of vertebrobasilar junction is a rare congenital anomaly and often associated with aneurysm formation. We describe five cases of vertebrobasilar junction aneurysms in four patients associated with fenestration, which were treated with endovascular coil occlusion using Guglielmi detachable coils (GDCs). The importance of preoperative computed tomography (CT) angiography to understand the complex anatomy of fenestration and aneurysm is emphasized.


METHODS
Three patients presented with subarachnoid hemorrhage and one patient presented with headache only. Among 3 patients with subarachnoid hemorrhage, 1 patient was referred for endovascular coil occlusion after clipping of ruptured distal ACA aneurysm. A six-French guiding catheter was placed in the left vertebral artery via right femoral artery, except for 1 patient who had two vertebrobasilar junction aneurysms with complex anatomic relationship, accessed bilaterally. Five vertebrobasilar junction aneurysms with fenestration were treated with endovascular coil occlusion using GDCs. Postoperative angiography demonstrated successful occlusion of aneurysmal sac with preservation of basilar artery.


CONCLUSIONS
Vertebrobasilar junction aneurysms are frequently associated with fenestrations. In addition to vertebral angiography on both sides, CT angiography may be a valuable tool for better understanding of complex anatomy of aneurysms associated with fenestration. The surgically difficult aneurysms such as vertebrobasilar junction aneurysm with fenestration can be successfully treated with GDCs.
Yoon
Seok Mann
SM
Department of Neurosurgery, Soonchunhyang University, Chunan Hospital, Chunan, South Korea.
Chun
Young Il
YI
Kwon
Yang
Y
Kwun
Byung Duck
BD
D000328:Adult; D000368:Aged; D001165:Arteriovenous Malformations / Q000000981:diagnostic imaging / Q000628:therapy*; D001488:Basilar Artery / Q000002:abnormalities* / Q000000981:diagnostic imaging; D002533:Cerebral Angiography; D004621:Embolization, Therapeutic; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007091:Image Processing, Computer-Assisted; D021621:Imaging, Three-Dimensional; D002532:Intracranial Aneurysm / Q000151:congenital* / Q000000981:diagnostic imaging / Q000628:therapy; D008297:Male; D008875:Middle Aged; D013345:Subarachnoid Hemorrhage / Q000000981:diagnostic imaging / Q000628:therapy; D014057:Tomography, X-Ray Computed; D014711:Vertebral Artery / Q000002:abnormalities* / Q000000981:diagnostic imaging