Stroke. 2003;34:1398-1403
Published online before print May 29, 2003, doi: 10.1161/01.STR.0000073841.88563.E9
Published online before print May 29, 2003, doi: 10.1161/01.STR.0000073841.88563.E9
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(Stroke. 2003;34:1398.)
© 2003 American Heart Association, Inc.
Original Contributions |
Long-Term Angiographic Recurrences After Selective Endovascular Treatment of Aneurysms With Detachable Coils
From the Department of Radiology (J.R., F.G., A.W., S.A.G., L.J., D.R.), Centre Hospitalier de l’Université de Montréal (CHUM), Notre-Dame Hospital, and the Research Center of CHUM ( J.R., A.L., J.L.) and the Department of Mathematics and Statistics, University of Montreal (M.C.), Montreal, Canada.
Correspondence to Jean Raymond, MD, Interventional Neuroradiology Research Laboratory, Centre Hospitalier de l’Université de Montréal (CHUM), Notre-Dame Hospital, 1560 Sherbrooke East, Room M-8203-1, Montreal, Quebec, H2L 4M1, Canada. E-mail dr_jean_raymond{at}hotmail.com
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 
2, t tests, or ANOVAs followed, when appropriate, by Tukey’s contrasts.
Results— Short-term (
1 year) follow-up angiograms were available in 353 aneurysms (70.5%) and long-term (>1 year) follow-up angiograms, in 277 (55%), for a total of 383 (76.5%) followed up. Recurrences were found in 33.6% of treated aneurysms that were followed up and that appeared at a mean±SD time of 12.31±11.33 months after treatment. Major recurrences presented in 20.7% and appeared at a mean of 16.49±15.93 months. Three patients (0.8%) bled during a mean clinical follow-up period of 31.32±24.96 months. Variables determined to be significant predictors (P<0.05) of a recurrence included aneurysm size 
10 mm, treatment during the acute phase of rupture, incomplete initial occlusions, and duration of follow-up.
Conclusions— Long-term monitoring of patients treated by endosaccular coiling is mandatory.
Key Words: endovascular therapy • intracranial aneurysm • recurrence
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J. Ray |