Long-Term Angiographic Recurrences After Selective Endovascular Treatment of Aneurysms With Detachable Coils

Abstract

Background and Purpose— Our aim in this study was to assess the incidence and determining factors of angiographic recurrences after endovascular treatment of aneurysms. Methods— A retrospective analysis of all patients with selective endosaccular coil occlusion of intracranial aneurysms prospectively collected from 1992 to 2002 was performed. There were 501 aneurysms in 466 patients (mean±SD age, 54.20±12.54 years; 74% female). Aneurysms were acutely ruptured (54.1%) or unruptured (45.9%). Mean±SD aneurysm size was 9.67±5.91 mm with a 4.31±1.97-mm neck. The most frequent sites were basilar bifurcation (27.7%) and carotid ophthalmic (18.0%) aneurysms. Recurrences were subjectively divided into minor and major (ideally necessitating re-treatment). The most significant predictors of angiographic recurrence were determined by logistic regression. These results were confirmed by χ2, t tests, or ANOVAs followed, when appropriate, by Tukey’s contrasts. Results— Short-term (≤1 year) follow-up angiograms were avai...