Background and objective
Endovascular coil embolization has been a major treatment modality for unruptured intracranial aneurysms (UIAs) in South Korea. However, there are still few reports on the outcomes of this procedure. We performed a retrospective, multicenter study to determine how safe and effective coiling for UIA has been over the most recent 3 years in South Korea.
Materials and methods
We analyzed a total of 2,180 UIAs in 2,035 patients who were treated by coiling from January 2007 to December 2009 at 22 centers in South Korea, with a focus on patient characteristics, the location and size of the aneurysms, procedural complications, and angiographic and clinical outcomes.
Coiling was successful in 98.0 % of the cases (2,137/2,180 aneurysms). Immediate post-procedural angiography demonstrated complete occlusion in 62.6 % (1,337/2,137 aneurysms), residual neck in 32.4 % (692/2,137), and residual sac in 5.0 % (108/2,137) of the cases. The rate of any procedure-related adverse event was 6.9 % (148/2,137 aneurysms). The rates of permanent morbidity and mortality were 1.8 % (39/2,137 aneurysms) and 0.1 % (2/2,137 aneurysms), respectively. Follow-up conventional angiography or MRA at ≥6 months was performed in 85.7 % (1,832/2,137 aneurysms) of cases. Among the eligible aneurysms for follow-up angiographic analysis, major recanalization was noted in 3.9 % (72/1,832 aneurysms, mean follow-up interval, 12 months). Among these, 68 aneurysms (3.7 %) were re-treated. An aneurysm of the middle cerebral artery (MCA) was a risk factor for incomplete occlusion (P = 0.049) and major recanalization (P = 0.046). During follow-up, no aneurysmal rupture occurred.
Endovascular coil embolization of UIAs has been an effective preventive modality with low procedure-related morbidity in South Korea.
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The study is supported by a grant from the Korea Healthcare Technology R&D Project, Ministry of Health & Welfare, Republic of Korea (A102065).
The authors have no personal, financial, or institutional interest concerning the materials or methods used in this study or the findings specified in this paper.
Conflicts of interest
The Korean Unruptured Cerebral Aneurysm Coiling (KUCAC) Investigators:
Jae Seung Ahn, Byung Duk Kwon, Dooh Hoon Kwon; Asan Medical Center, Seoul, Korea
Min-Woo Baik, Seong-Rim Kim, Young Woo Kim; Bucheon St. Mary’s Hospital, Bucheon, Korea
Jun Su Byeon, Sung Nam Hwang, Taek Kyun Nam; Chung-ang University Hospital, Seoul, Korea
Jae-Hyung Choi, Jae-Taeck Huh, Myong-Jin Kang; Dong-A University Hospital, Busan, Korea
Jin Young Jung; Dong-Eui Medical Center, Busan, Korea
Keun-Tae Cho, Seung-Koan Hong, Byeong Cheol Kim; Dong Guk University Ilsan Hospital, Ilsan, Korea
Seung-Gyun Hwang; Ewha Womans University Hospital, Seoul, Korea
Chan Jong Ryu; Gil Hospital, Incheon, Korea
Dae Seob Choi, Cheol Hee Lee, In Sung Park; GyeongSang National University Hospital, Jinju, Korea
Gyojun Hwang, Seung Hun Sheen; Hallym University Chuncheon Medical Center, Chuncheon, Korea
Young Il Chun, Chang Taek Moon, Hong Gee Roh; Konkuk University Medical Center, Seoul, Korea
Jun Seok Koh, Chang Woo Ryu, Hee Sup Shin; Kyoung Hee University Hospital at Gangdong, Seoul, Korea
Dong Hun Kang, Youg-Sun Kim, Jaechan Park; Kyungpook National University Hospital, Daegu, Korea
Tae Sik Kong; Presbyterian Medical Center, Jeonju, Korea
Seung-Chyul Hong, Pyoung Jeon, Jong-Soo Kim; Samsung Medical Center, Seoul, Korea
Jae Seung Bang, O-Ki Kwon, Chang Wan Oh; Seoul National University Bundang Hospital, Bundang Korea
Young Dae Cho, Moon Hee Han, Hyun-Seung Kang; Seoul National University Hospital, Seoul, Korea
Hack-Gun Bae, Seok-Mann Yoon, Il-Gyu Yun; Soonchunhyang University Cheonan Hospital, Cheonan, Korea
Sung Jin Cho, Sukh Que Park, Sung-Tae Park; Soonchunhyang University Seoul Hospital, Seoul, Korea
Min-ho Kim, Soon Chan Kwon, Shang Hun Shin; Ulsan University Hospital, Ulsan, Korea
Myeong Sub Lee, Ji Woong Oh, Kum Whang,; Wonju Severance Christian Hospital, Wonju, Korea
Cheol Hun Jang, Young Jin Jung; Yeungnam University Medical Center, Daegu, Korea
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Kwon, S.C., Kwon, OK. & the Korean Unruptured Cerebral Aneurysm Coiling (KUCAC) Investigators. Endovascular coil embolization of unruptured intracranial aneurysms: a Korean multicenter study. Acta Neurochir 156, 847–854 (2014). https://doi.org/10.1007/s00701-014-2033-9