scholarly journals A Case of Internal Carotid Artery Dissection Caused by an Elongated Styloid Process: Successful Treatment with Carotid Artery Stenting and Partial Resection of the Styloid Process

2016 ◽  
Vol 44 (2) ◽  
pp. 145-150 ◽  
Author(s):  
Haruka MIYATA ◽  
Ichiro NAKAHARA ◽  
Tsuyoshi OHTA ◽  
Shoji MATSUMOTO ◽  
Nobutake SADAMASA ◽  
...  
Keyword(s):  
Carotid Artery ◽  
Internal Carotid Artery ◽  
Successful Treatment ◽  
Carotid Artery Stenting ◽  
Internal Carotid ◽  
Styloid Process ◽  
Carotid Artery Dissection ◽  
Artery Dissection ◽  
Internal Carotid Artery Dissection ◽  
Elongated Styloid Process

scholarly journals Internal carotid artery dissection due to elongated styloid process

2021 ◽  
Vol 14 (9) ◽  
pp. e245908
Author(s):  
Matthew Tanti ◽  
Aubrey Smith ◽  
Daniel J Warren ◽  
Luis Idrovo
Keyword(s):  
Carotid Artery ◽  
Internal Carotid Artery ◽  
Internal Carotid ◽  
Styloid Process ◽  
Carotid Artery Dissection ◽  
Artery Dissection ◽  
Internal Carotid Artery Dissection ◽  
Elongated Styloid Process

scholarly journals Anatomical characteristics of the styloid process in internal carotid artery dissection: Case–control study

2017 ◽  
Vol 13 (4) ◽  
pp. 400-405
Author(s):  
José M Amorim ◽  
Daniela Pereira ◽  
Marta G Rodrigues ◽  
José Beato-Coelho ◽  
Margarida Lopes ◽  
...  
Keyword(s):  
Carotid Artery ◽  
Internal Carotid Artery ◽  
Internal Carotid ◽  
Styloid Process ◽  
Carotid Artery Dissection ◽  
Artery Dissection ◽  
Internal Carotid Artery Dissection ◽  
Process Length ◽  
Control Study ◽  
Cervical Internal Carotid Artery

Introduction Pathophysiology of cervical artery dissection is complex and poorly understood. In addition to well-known causative and predisposing factors, including major trauma and monogenic connective tissue disorders, morphological characteristics of the styloid process have been recently recognized as a possible risk factor for cervical internal carotid artery dissection. Aims To study the association of the anatomical characteristics of styloid process with internal carotid artery dissection. Methods Retrospective, multicenter, case–control study of patients with internal carotid artery dissection and age- and sex-matched controls. Consecutive patients with internal carotid artery dissection and controls with ischemic stroke or transient ischemic attack of any etiology excluding internal carotid artery dissection, who had performed computed tomography angiography, diagnosed between January 2010 and September 2016. Two independent observers measured styloid process length and styloid process distance to internal carotid artery. Results Sixty-two patients with internal carotid artery dissection and 70 controls were included. Interobserver agreement was good for styloid process length and styloid process–internal carotid artery distance (interclass correlation coefficient = 0.89 and 0.76, respectively). Styloid process ipsilateral to dissection was longer than left and right styloid process in controls (35.8 ± 14.4 mm versus 30.4 ± 8.9 mm and 30.3 ± 8.2 mm, p = 0.011 and p = 0.008, respectively). Styloid process–internal carotid artery distance ipsilateral to dissection was shorter than left and right distance in controls (6.3 ± 1.9 mm versus 7.2 ± 2.1 mm and 7.0 ± 2.3 mm, p = 0.003 and p = 0.026, respectively). Internal carotid artery dissection was associated with styloid process length (odds ratio = 1.04 mm−1, 95% confidence interval = 1.01–1.08, p = 0.015) and styloid process–internal carotid artery distance (OR = 0.77 mm−1, 95% confidence interval = 0.64–0.92, p = 0.004). Conclusion Longer styloid process and shorter distance between styloid process and cervical internal carotid artery are associated with cervical internal carotid artery dissection.

scholarly journals Recurrence of internal carotid artery dissection associated with elongated styloid process: A case report

2021 ◽  
Vol 12 ◽  
pp. 473
Author(s):  
Shigeomi Yokoya ◽  
Hidesato Takezawa ◽  
Hideki Oka ◽  
Akihiko Hino
Keyword(s):  
Carotid Artery ◽  
Internal Carotid Artery ◽  
Internal Carotid ◽  
Styloid Process ◽  
Carotid Artery Dissection ◽  
Artery Dissection ◽  
Elongated Styloid Process ◽  
Initial Onset ◽  
Long Term Follow Up ◽  
Ischemic Attack

Background: An elongated styloid process is known to cause ischemic stroke. Previous reports claim that internal carotid artery (ICA) dissection due to the elongated styloid process has good outcomes when treated conservatively; however, long-term follow-up has not been attempted and recurrence in the later period has not been reported so far. We report a case of recurrence of symptoms over a decade after the initial onset. Case Description: A 59-year-old man experienced a transient ischemic attack (TIA) 10 years ago. Six years ago, he experienced hemispheric TIA, and magnetic resonance angiography revealed a diminished signal of the left ICA; however, no further examination was performed. Four years ago, he experienced another transient amaurosis attack and was treated with antiplatelet therapy because no embolic source was detected using ultrasonography examination, and he was diagnosed with idiopathic ICA dissection. Recently, he experienced a third amaurosis fugax attack. Digital subtraction angiography and cone-beam computed tomography demonstrated left cervical ICA dissection due to elongated styloid process. He underwent surgical resection of the left styloid process and cervical stent placement. He had no ischemic attacks postoperatively. Conclusion: The elongated styloid process may cause recurrent ischemic attacks over a decade due to ICA dissection.

scholarly journals Extracranial internal carotid artery dissection caused by compression from a giant osteophyte due to atlantoaxial osteoarthritis: case report

2017 ◽  
Vol 27 (4) ◽  
pp. 410-414
Author(s):  
Taichi Ikedo ◽  
Kazuhito Nakamura ◽  
Noritaka Sano ◽  
Manabu Nagata ◽  
Yumiko Okada ◽  
...  
Keyword(s):  
Carotid Artery ◽  
Internal Carotid Artery ◽  
Internal Carotid ◽  
Styloid Process ◽  
Carotid Artery Dissection ◽  
Artery Dissection ◽  
Internal Carotid Artery Dissection ◽  
Extracranial Internal Carotid Artery ◽  
Balloon Test Occlusion ◽  
Neck Rotation

Deformed osseous structures have been reported as rare causes of extracranial internal carotid artery (ICA) dissection, including the styloid process and the hyoid bone. Here, the authors describe the first known case of symptomatic ICA dissection caused by a giant osteophyte due to atlantoaxial osteoarthritis. The left ICA was fixed at the skull base and at the ICA portion compressed by the osteophyte, and it was highly stretched and injured between the two portions during neck rotation. The patient was successfully treated with ligation of the affected ICA following balloon test occlusion. Atlantoaxial osteoarthritis should be considered in the differential diagnosis of ICA dissection in patients with a severely deformed cervical spine.

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