INTRODUCTION: Although approximately one in every 10 @entity1 undergoing coil embolization of @entity438 requires retreatment, the factors that are associated with outcome following retreatment remain to be fully elucidated. METHODS: This is a single-center, retrospective review of 43 @entity1 with 58 @entity438 that were retreated from 2004 to 2014. @entity439 undergoing first time or microsurgical retreatment were excluded. Retreatment types were grouped into those without permanent parent vessel support (stand-alone and balloon-assisted coiling) versus those with permanent parent vessel support (stent-assisted coiling, stand-alone stenting, and flow diversion). The Modified Raymond Roy Classification was used to group @entity439 at all angiographic follow-up points either in the successful outcome group (Class I or II) or the unsuccessful outcome group (Class IIIa or IIIb). RESULTS: Of @entity439 with follow-up, 50% were in the successful group and 50% in the unsuccessful group. In univariate analysis, small @entity439 size (p   <   0.001), previous treatment type (p   =   0.022), retreatment type (p   =   0.001), and initial occlusion class (p   =   0.005) were all associated with angiographic outcome. In multivariate analysis, small @entity439 size (p   =   0.005, odds ratio (OR) 24.56, confidence interval (CI) 2.68-225.4) and retreatment type with permanent parent vessel support, namely stent-assisted coiling (p   =   0.017, OR 31.1, CI 1.89-517.7), were associated with retreatment success. CONCLUSIONS: Small @entity439 size and retreatment with permanent parent vessel support, namely stent-assisted coiling, are predictors of success following endovascular retreatment of @entity438 . These findings could be useful in the effort to both prevent and predict treatment failure following endovascular retreatment.

Predictors of success following endovascular retreatment of XXXX .

@entity1 :: ('9606', 'Species') :: ['patients'] @entity439 :: ('MESH:D000783', 'Disease') :: ['aneurysms', 'aneurysm', 'Aneurysms'] @entity438 :: ('MESH:D002532', 'Disease') :: ['intracranial aneurysms']
@entity438 :: (MESH:D002532,Disease) :: ['intracranial aneurysms']
