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Angiographic outcome of intracranial aneurysms with neck remnant following coil embolization.
MedLine Citation:
PMID:  24792578     Owner:  NLM     Status:  Publisher    
BACKGROUND: The degree of aneurysm occlusion following coil embolization has an impact on aneurysm recanalization.
OBJECTIVE: To explain the natural history of intracranial aneurysms with neck remnant, Raymond-Roy Occlusion Classification (RROC) class II.
METHODS: A single-center, retrospective study of 198 patients with 209 aneurysms treated with coil embolization that were initially either RROC class I or II. The angiographic outcomes at short- and long-term follow-up were compared as well as the complication/re-treatment rates. Atypical aneurysms and those that had been previously treated were excluded.
RESULTS: Ninety-nine class I aneurysms were compared with 110 class II aneurysms. There was no difference in recanalization rate between the groups (class I 3.3% vs class II 8.5%, p=0.478) at short-term follow-up (8.2 months) and at subsequent follow-ups (21.7 and 52.1 months). There was also no difference in re-treatment rates (class I 3.3% vs class II 8.5%, p=0.196) or complication rates (class I 9.1% vs class II 4.6%, p=0.12). There were no aneurysm ruptures after treatment in either group.
CONCLUSIONS: The angiographic outcome of aneurysms with neck remnant following coil embolization is similar to that of completely occluded aneurysms in that most remain stable and few recanalize. This understanding could potentially help the interventional neurosurgeon avoid complications such as coil herniation, vessel compromise, and stroke in selected cases. Further investigation with a larger patient population is warranted.
Justin R Mascitelli; Eric K Oermann; Reade A De Leacy; Henry Moyle; Aman B Patel
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2014-5-2
Journal Detail:
Title:  Journal of neurointerventional surgery     Volume:  -     ISSN:  1759-8486     ISO Abbreviation:  J Neurointerv Surg     Publication Date:  2014 May 
Date Detail:
Created Date:  2014-5-5     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101517079     Medline TA:  J Neurointerv Surg     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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