Left vertebral artery arising from the external carotid artery: an uncommon anatomical variant.

IF 1.4 4区医学 Q2 Medicine

Surgical and Radiologic Anatomy Pub Date : 2024-11-28 DOI:10.1007/s00276-024-03518-3

Sofia Velasco, Juan Andrés Mejía, Andrés Vasquez, Angela Guarnizo

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引用次数: 0

Abstract

Purpose: To report an uncommon origin of the vertebral artery with embryological and clinical emphasis.

Methods: A 55-year-old male with sepsis presented with altered level of consciousness. Head computed tomography (CT), and CT angiography of head and neck vessels (CTA) were performed in the stroke code setting. An analysis of his vertebral artery system on CTA with 3D modeling was performed to assess the embryology of a vertebral artery arising from the external carotid artery, RESULTS: CTA revealed a dominant left vertebral arising from the left external carotid artery, the artery enters the transverse foramen at C2 and curves back behind the lateral mass of C1 entering the skull through the foramen magnum. The right vertebral artery was hypoplastic.

Conclusion: Anatomical variants of the vertebral artery origin are asymptomatic, and they are the result of the persistence of anomalous anastomosis during early fetal life. Vertebral artery origin from the external carotid artery as seen in our case is explained by the persistence of the second cervical intersegmental artery. Awareness of this anatomical variant is essential to avoid misdiagnosis, and for surgical and endovascular treatment planning.

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左侧椎动脉源于颈外动脉：一种不常见的解剖变异。

目的：以胚胎学和临床为重点，报告一种不常见的椎动脉起源：一名 55 岁男性患者因败血症出现意识改变。方法：一名 55 岁男性患者因脓毒症出现意识改变，在卒中代码设置中进行了头部计算机断层扫描（CT）和头颈部血管 CT 血管造影（CTA）。结果：CTA显示，左侧椎体的优势动脉来自左侧颈外动脉，该动脉在C2处进入横突孔后在C1侧块后方弯曲，通过枕骨大孔进入颅内。右侧椎动脉发育不良：结论：椎动脉起源的解剖变异是无症状的，是胎儿早期吻合异常持续存在的结果。在我们的病例中，椎动脉起源于颈外动脉的原因是第二颈椎节间动脉的持续存在。认识到这种解剖变异对于避免误诊、制定手术和血管内治疗计划至关重要。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Surgical and Radiologic Anatomy Medicine-Pathology and Forensic Medicine

CiteScore

2.40

自引率

14.30%

发文量

期刊介绍： Anatomy is a morphological science which cannot fail to interest the clinician. The practical application of anatomical research to clinical problems necessitates special adaptation and selectivity in choosing from numerous international works. Although there is a tendency to believe that meaningful advances in anatomy are unlikely, constant revision is necessary. Surgical and Radiologic Anatomy, the first international journal of Clinical anatomy has been created in this spirit. Its goal is to serve clinicians, regardless of speciality-physicians, surgeons, radiologists or other specialists-as an indispensable aid with which they can improve their knowledge of anatomy. Each issue includes: Original papers, review articles, articles on the anatomical bases of medical, surgical and radiological techniques, articles of normal radiologic anatomy, brief reviews of anatomical publications of clinical interest. Particular attention is given to high quality illustrations, which are indispensable for a better understanding of anatomical problems. Surgical and Radiologic Anatomy is a journal written by anatomists for clinicians with a special interest in anatomy.