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Journal of Neurosonology 2017;9(1):18-20.
Published online November 30, 2017.
Asymptomatic Free-Floating Thrombus in the Chronic Occluded Common Carotid Artery
Joong-Goo Kim, Eun-Jae Lee, Sun U. Kwon
Department of Neurology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
만성 총경동맥 폐색에서 관찰된 무증상적 자유 부동 혈전
김중구, 이은재, 권순억
울산대학교 의과대학 서울아산병원 신경과
Correspondence:  Sun U. Kwon, Tel: +82-2-3010-3960, Fax: +82-2-474-4691, 
Email: sukwon@amc.seoul.kr
Received: 15 February 2017   • Accepted: 31 March 2017
Free-floating thrombus (FFT) of the carotid artery, which is almost symptomatic, is rarely detected by carotid duplex ultrasonography in patients with cerebrovascular events. Although, the exact etiology of FFT remains unknown, possible mechanism is complicated atherosclerotic plaques of carotid wall and hypercoagulable state. We report a case of FFT in patient with asymptomatic chronic occluded common carotid artery. Carotid duplex ultrasonography is a non- invasive assessment of vascular anatomy and useful in defining the characteristics of FFT.
Key Words: Carotid Artery, Common, Carotid artery thrombosis, Ultrasonography, Doppler, Duplex
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