title: Retreatment of recanalized aneurysms after Y-stent-assisted coil embolization with double enterprise stents: case report and systematic review of the literature.
abstract: It is necessary to consider possibility of recanalization and retreatment after coil embolization for cerebral aneurysms. There is concern that retreatment for recanalized aneurysms after Y-stent-assisted coil embolization may be difficult because of double stents, especially in Y-stents with double closed-cell stents owing to narrowed structures. However, no detailed reports of retreatment after Y-stent have been reported. Between July 2010 and June 2013, we treated four aneurysms with Y-stent-assisted coil embolization using Enterprise closed-cell stents. Recanalization occurred in one case (25%), and retreatment was performed. We easily navigated a microcatheter into the target portions of the aneurysm through the Y-stent and occluded the aneurysm with coils. Additionally, by systematically searching in PubMed, we found 105 cases of Y-stent-assisted coil embolization using Enterprise stents or Neuroform stents with more than 6 months of follow-up. Among them, retreatment was performed in 10 cases (9.5%). There were no significant differences in retreatment rates among different stent combinations (P=0.91; Fisher's exact test). In conclusion, navigation of a microcatheter into the aneurysm through the Y-stent with double Enterprise stents was feasible, and retreatment rates after Y-stent-assisted coiling may not depend on stent combinations.
authors: Wakayama Rosai Hospital, Department of Neurosurgery, 93-1 Kinomoto, Wakayama, Japan.
authors: Kenichi
authors: K
authors: Kono
authors: Aki
authors: A
authors: Shintani
authors: Tomoaki
authors: T
authors: Terada
mesh_terms: D000368:Aged; D005260:Female; D006801:Humans; D001488:Basilar Artery / Q000473:pathology; D004621:Embolization, Therapeutic / Q000379:methods; D002532:Intracranial Aneurysm / Q000628:therapy; D012008:Recurrence; D012086:Reoperation; D019233:Retreatment; D015607:Stents