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J Neurosonol Neuroimag > Volume 16(1); 2024 > Article
Journal of Neurosonology and Neuroimaging 2024;16(1):21-23.
DOI: https://doi.org/10.31728/jnn.2024.00152    Published online June 30, 2024.
Carotid Artery Dissection Caused by an Elongated Styloid Process: A Case Report
Yoon-Jung Kang, MD1,2; Sang Min Sung, MD, PhD1,2,3; Han Jin Cho, MD, PhD1,2; Tae Hong Lee, MD1,4
1Stroke Center, Pusan National University Hospital, School of Medicine, Pusan National University, Busan, Korea
2Department of Neurology, Pusan National University Hospital, School of Medicine, Pusan National University, Busan, Korea
3Biomedical Research Institute, Pusan National University Hospital, School of Medicine, Pusan National University, Busan, Korea
4Department of Radiology, Pusan National University Hospital, School of Medicine, Pusan National University, Busan, Korea
Correspondence:  Sang Min Sung, MD, PhD, Tel: +82-51-240-7317, Fax: +82-51-245-2783, 
Email: aminoff@hanmail.net
Received: 15 April 2024   • Revised: 24 May 2024   • Accepted: 9 June 2024
Abstract
Eagle’s syndrome is caused by an elongated styloid process or calcified stylohyoid ligament that interferes with adjacent structures. Herein, we present the case of a 26-year-old man who presented to the emergency department due to sudden onset pain in the right occipital area, dysarthria, left hemiparesis, and left arm paresthesia. Computed tomography (CT) angiography revealed an intimal flap and thrombus in the proximal right internal carotid artery (ICA), indicative of carotid artery dissection, as well as direct contact between the styloid process and ICA on both sides. The patient underwent anticoagulation with intravenous heparin for 7 days, followed by 75 mg of clopidogrel per day. Following treatment, the patient gradually improved and was discharged with slight paresthesia in the left arm two weeks after symptom onset. Carotid artery dissection is a rare manifestation of Eagle’s syndrome caused by an elongated styloid process.
Key Words: internal carotid artery; dissection; Eagle syndrome; elongated styloid process
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