PMID- 26657113 OWN - NLM STAT- MEDLINE DCOM- 20161213 LR - 20161230 IS - 1532-8511 (Electronic) IS - 1052-3057 (Linking) VI - 25 IP - 3 DP - 2016 Mar TI - Relationship between Angiographic Results and Morphology in Sidewall Intracranial Aneurysms after Stent-Assisted Coil Embolization. PG - 533-9 LID - S1052-3057(15)00583-2 [pii] LID - 10.1016/j.jstrokecerebrovasdis.2015.11.001 [doi] AB - BACKGROUND: Stent-assisted coil embolization (SACE) is used to address wide-necked or complex aneurysms. However, as they may recanalize after SACE, predictors of recanalization are needed. We investigated the relationship between follow-up angiographic results and the morphology of sidewall (SW) aneurysms in patients treated by SACE. METHODS: Between September 2010 and September 2014, we performed 80 SACE procedures for SW intracranial aneurysms. Angiographic findings, obtained immediately after the procedure, 3-6 months thereafter, and when aneurysmal recanalization was suspected on MR angiogram scan, were recorded. Morphologically, the SW aneurysms were classified as "outside" (OS) and "partially inside" (PI) based on the curve of the axes of the proximal or distal parent artery with respect to the aneurysmal neck. Follow-up angiographic studies on OS- and PI SW aneurysms were compared. RESULTS: On the initial angiograms, we classified 42 aneurysms as OS and 38 as PI. Immediately after SACE, there was no significant difference in the angiographic findings on OS and PI aneurysms. However, on follow-up angiograms, there was a significant difference in the rate of spontaneous improvement (4 of 42 [OS] versus 21 of 38 [PI], P = .001). We performed additional coil embolization to treat 3 recanalized OS aneurysms. CONCLUSIONS: SW aneurysms classified morphologically as PI tended to occlude progressively even after incomplete occlusion by SACE. In contrast, aneurysms classified as OS must be observed carefully after SACE. CI - Copyright (c) 2016 National Stroke Association. Published by Elsevier Inc. All rights reserved. FAU - Nii, Kouhei AU - Nii K AD - Department of Neurosurgery, Fukuoka University Chikushi Hospital, Fukuoka, Japan. Electronic address: k.nii@cis.fukuoka-u.ac.jp. FAU - Aikawa, Hiroshi AU - Aikawa H AD - Department of Neurosurgery, Fukuoka University Chikushi Hospital, Fukuoka, Japan. FAU - Tsutsumi, Masanori AU - Tsutsumi M AD - Department of Neurosurgery, Fukuoka University Chikushi Hospital, Fukuoka, Japan. FAU - Eto, Ayumu AU - Eto A AD - Department of Neurosurgery, Fukuoka University Chikushi Hospital, Fukuoka, Japan. FAU - Iko, Minoru AU - Iko M AD - Department of Neurosurgery, Fukuoka University Chikushi Hospital, Fukuoka, Japan. FAU - Sakamoto, Kimiya AU - Sakamoto K AD - Department of Neurosurgery, Fukuoka University Chikushi Hospital, Fukuoka, Japan. FAU - Inoue, Ritsuro AU - Inoue R AD - Department of Neurosurgery, Fukuoka University Chikushi Hospital, Fukuoka, Japan. FAU - Mitsutake, Takafumi AU - Mitsutake T AD - Department of Neurosurgery, Fukuoka University Chikushi Hospital, Fukuoka, Japan. FAU - Hanada, Hayatsura AU - Hanada H AD - Department of Neurosurgery, Fukuoka University Chikushi Hospital, Fukuoka, Japan. FAU - Kazekawa, Kiyoshi AU - Kazekawa K AD - Department of Neurosurgery, Fukuoka University Chikushi Hospital, Fukuoka, Japan. LA - eng PT - Journal Article DEP - 20151204 PL - United States TA - J Stroke Cerebrovasc Dis JT - Journal of stroke and cerebrovascular diseases : the official journal of National Stroke Association JID - 9111633 SB - IM MH - Aged MH - Aged, 80 and over MH - Embolization, Therapeutic/*adverse effects MH - Female MH - Follow-Up Studies MH - Humans MH - Imaging, Three-Dimensional MH - Intracranial Aneurysm/*diagnostic imaging/*etiology/therapy MH - Magnetic Resonance Angiography/*methods MH - Male MH - Middle Aged MH - Retrospective Studies MH - Stents/*adverse effects OTO - NOTNLM OT - Angiographic results OT - intracranial aneurysm OT - morphology OT - sidewall OT - stent-assisted coil embolization EDAT- 2015/12/15 06:00 MHDA- 2016/12/15 06:00 CRDT- 2015/12/15 06:00 PHST- 2015/06/19 00:00 [received] PHST- 2015/09/29 00:00 [revised] PHST- 2015/11/01 00:00 [accepted] PHST- 2015/12/15 06:00 [entrez] PHST- 2015/12/15 06:00 [pubmed] PHST- 2016/12/15 06:00 [medline] AID - S1052-3057(15)00583-2 [pii] AID - 10.1016/j.jstrokecerebrovasdis.2015.11.001 [doi] PST - ppublish SO - J Stroke Cerebrovasc Dis. 2016 Mar;25(3):533-9. doi: 10.1016/j.jstrokecerebrovasdis.2015.11.001. Epub 2015 Dec 4.