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ORIGINAL RESEARCH INTERVENTIONAL Predictors of Cerebral Aneurysm Rupture after Coil Embolization: Single-Center Experience with Recanalized Aneurysms Y. Funakoshi, H. Imamura, S. Tani, H. Adachi, R. Fukumitsu, T. Sunohara, Y. Omura, Y. Matsui, N. Sasaki, T. Fukuda, R. Akiyama, K. Horiuchi, S. Kajiura, M. Shigeyasu, K. Iihara, and N. Sakai ABSTRACT BACKGROUND AND PURPOSE: Recanalization after coil embolization is widely studied. However, there are limited data on how recanalized aneurysms rupture. Herein, we describe our experience with the rupture of recanalized aneurysms and discuss the type of recanalized aneurysms at greatest rupture risk. MATERIALS AND METHODS: A total of 426 unruptured aneurysms and 169 ruptured aneurysms underwent coil embolization in our institution between January 2009 and December 2017. Recanalization occurred in 38 (8.9%) of 426 unruptured aneurysms (unrup- tured group) and 37 (21.9%) of 169 ruptured aneurysms (ruptured group). The Modified Raymond-Roy classification on DSA was used to categorize the recanalization type. Follow-up DSA was scheduled until 6 months after treatment, and follow-up MRA was scheduled yearly. If recanalization was suspected on MRA, DSA was performed. RESULTS: In the unruptured group, the median follow-up term was 74.0 months. Retreatment for recanalization was performed in 18 aneurysms. Four of 20 untreated
American Journal of Neuroradiology – American Journal of Neuroradiology
Published: May 1, 2020
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