BACKGROUND: Although endovascular technique and related devices continue to improve, recanalization of embolized aneurysm remains a pitfall of this approach. The problem of how to treat the recanalized aneurysm needs to be addressed. OBJECTIVE: To determine the outcomes of patients undergoing repeat embolization for recanalized intracranial aneurysms and to evaluate the impact of stent implantation on subsequent recanalization. METHODS: Between September 2001 and September 2011, we performed endovascular retreatment in 162 patients with a total of 197 recanalized intracranial aneurysms. Stent implantation was performed in 68 aneurysms during the retreatment. Clinical and morphological outcomes were assessed at 6 months or more after repeat embolization. RESULTS: Procedure-related complications, including asymptomatic thromboembolism, occurred with 15 aneurysms (7.6%) without permanent neurological sequelae. Follow-up imaging of 172 aneurysms documented stable occlusion in 96 of the lesions (55.8%), minor recanalization in 17 (9.9%), and major recanalization in 59 (34.3%) during the mean follow-up period of 26.0 ± 18.0 months. In multiple logistic regression analysis, stent implantation was shown to reduce the major recanalization rate at 6 months after retreatment (odds ratio: 0.161; 95% confidence interval:, 0.038-0.670; P = .012) and thereafter (odds ratio: 0.226; 95% confidence interval: 0.088-0.581; P = .002). CONCLUSION: Stent implantation, as well as compact coil packing, at the time of repeat embolization seems beneficial in reducing rates of further recanalization.
BACKGROUND: Although endovascular technique and related devices continue to improve, recanalization of embolized aneurysm remains a pitfall of this approach. The problem of how to treat the recanalized aneurysm needs to be addressed. OBJECTIVE: To determine the outcomes of patients undergoing repeat embolization for recanalized intracranial aneurysms and to evaluate the impact of stent implantation on subsequent recanalization. METHODS: Between September 2001 and September 2011, we performed endovascular retreatment in 162 patients with a total of 197 recanalized intracranial aneurysms. Stent implantation was performed in 68 aneurysms during the retreatment. Clinical and morphological outcomes were assessed at 6 months or more after repeat embolization. RESULTS: Procedure-related complications, including asymptomatic thromboembolism, occurred with 15 aneurysms (7.6%) without permanent neurological sequelae. Follow-up imaging of 172 aneurysms documented stable occlusion in 96 of the lesions (55.8%), minor recanalization in 17 (9.9%), and major recanalization in 59 (34.3%) during the mean follow-up period of 26.0 ± 18.0 months. In multiple logistic regression analysis, stent implantation was shown to reduce the major recanalization rate at 6 months after retreatment (odds ratio: 0.161; 95% confidence interval:, 0.038-0.670; P = .012) and thereafter (odds ratio: 0.226; 95% confidence interval: 0.088-0.581; P = .002). CONCLUSION: Stent implantation, as well as compact coil packing, at the time of repeat embolization seems beneficial in reducing rates of further recanalization.
Authors: J P Jeon; Y D Cho; J K Rhim; D H Yoo; W-S Cho; H-S Kang; J E Kim; M H Han Journal: AJNR Am J Neuroradiol Date: 2016-03-10 Impact factor: 3.825
Authors: Justin R Mascitelli; Eric K Oermann; J Mocco; Johanna T Fifi; Srinivasan Paramasivam; Christopher J Stapleton; Aman B Patel Journal: Interv Neuroradiol Date: 2015-06-19 Impact factor: 1.610
Authors: Olli I Tähtinen; Hannu I Manninen; Ritva L Vanninen; Riitta Rautio; Arto Haapanen; Janne Seppänen; Tero Niskakangas; Jaakko Rinne; Leo Keski-Nisula Journal: Neuroradiology Date: 2013-07-17 Impact factor: 2.804