title: Stent placement to treat ruptured vertebral dissecting aneurysms.
abstract: Conventional endovascular treatment may have limitations for vertebral dissecting aneurysm involving the origin of the posterior inferior cerebellar artery (PICA). We report our experiences of treating vertebral dissecting aneurysm with PICA origin involvement by placing a stent from the distal vertebral artery (VA) to the PICA to save the patency of the PICA. Stenting from the distal VA to the PICA was attempted to treat ruptured VA dissecting aneurysm involving the PICA origin with sufficient contralateral VA in eight patients. The procedure was successfully performed in seven patients with one failure because of PICA origin stenosis, which was treated with two overlapping stents. In the seven patients, PICAs had good patency on postoperative angiography and transient lateral brainstem ischemia represents a procedure-related complication. Follow-up angiographies were performed in seven patients and showed recanalization of the distal VA in three patients without evidence of aneurysmal filling. There was no evidence of aneurysm rupture during the follow-up period, and eight patients had favorable outcomes (mRS, 0 - 1). Placing a stent from the distal VA to the PICA with VA occlusion may present an alternative to conventional endovascular treatment for vertebral dissecting aneurysm with PICA origin involvement with sufficient contralateral VA.
authors.affiliation: Department of Neurosurgery, Qilu Hospital, Shandong University; Jinan, China - Department of Neurosurgery, Yantai Yuhuangding Hospital, Qingdao University School of Medicine; Yantai, China - liweijing72@163.com.
authors.forename: Yong-An
authors.initials: YA
authors.lastname: Chen
authors.forename: Rong-Bo
authors.initials: RB
authors.lastname: Qu
authors.forename: Yu-Song
authors.initials: YS
authors.lastname: Bian
authors.forename: Wei
authors.initials: W
authors.lastname: Zhu
authors.forename: Kun-Peng
authors.initials: KP
authors.lastname: Zhang
authors.forename: Qi
authors.initials: Q
authors.lastname: Pang
mesh_terms: D000328:Adult; D000368:Aged; D001807:Blood Vessel Prosthesis; D002531:Cerebellum / Q000098:blood supply* / Q000000981:diagnostic imaging / Q000601:surgery*; D002533:Cerebral Angiography / Q000379:methods; D006801:Humans; D008297:Male; D008875:Middle Aged; D019919:Prosthesis Implantation / Q000379:methods; D015607:Stents; D025321:Surgery, Computer-Assisted / Q000379:methods*; D016896:Treatment Outcome; D020217:Vertebral Artery Dissection / Q000000981:diagnostic imaging* / Q000601:surgery*
keywords: dissecting aneurysm; posterior inferior cerebellar artery; stent; vertebral artery