Right vertebral artery arising from the extreme proximal right subclavian artery and entering the C3 transverse foramen diagnosed by magnetic resonance angiography.

IF 1.4 4区医学 Q2 Medicine

Surgical and Radiologic Anatomy Pub Date : 2025-03-25 DOI:10.1007/s00276-025-03621-z

Akira Uchino, Yuki Mukai

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引用次数: 0

Abstract

Purpose: To describe a case of right vertebral artery (VA) arising from the extreme proximal right subclavian artery (SA) and entering the C3 transverse foramen (TF), which was diagnosed by magnetic resonance angiography (MRA).

Methods: A 46-year-old woman with acute pontine infarction underwent MRA using a 3-Tesla scanner. MRA was performed using a standard 3-dimensional time-of-flight technique.

Results: MRA of the intracranial region revealed no pathological lesions. Fenestrations of the basilar artery were observed. MRA from the aortic arch (AA) to the craniovertebral junction level also showed no pathological lesions; however, there was a right VA arising from the extreme proximal right SA. The distance from the origin of the right SA to the origin of the right VA was 3 mm. The right VA entered the C3 TF.

Conclusion: The right VA rarely enters C3 TF, with a reported prevalence of approximately 0.1%. The right VA arises from the right SA at two types of points: a normal point of origin and an extremely proximal point of origin. The latter type is considered to result from the same embryonic developmental variation of the left VA arising from AA. Although the image quality of MRA at the level of AA is not as good as that of computed tomography angiography, careful observation of MRA and the creation of reformatted MRA images are important for the correct diagnosis of this rare variation.

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右椎动脉起源于右锁骨下动脉最近端并进入C3横孔磁共振血管造影诊断。

目的：报告1例右椎动脉（VA）起源于右锁骨下动脉（SA）最近端并进入C3横孔（TF）的病例，并应用磁共振血管造影（MRA）诊断。方法：一名46岁的急性桥脑梗死女性患者采用3-特斯拉扫描仪行MRA。MRA使用标准的三维飞行时间技术进行。结果：颅内区域MRA未见病理改变。观察基底动脉开孔。从主动脉弓（AA）到颅椎交界处的MRA也未见病理病变；然而，在右SA的最近端有一个右VA。右SA原点到右VA原点的距离为3mm。右侧VA进入C3 TF。结论：右侧VA很少进入C3 TF，据报道患病率约为0.1%。右VA起源于右SA的两种类型的点：一个正常的原点和一个极近的原点。后一种类型被认为是由AA引起的左VA的相同胚胎发育变异引起的。虽然AA级别的MRA图像质量不如计算机断层血管造影，但仔细观察MRA并创建重新格式化的MRA图像对于正确诊断这种罕见的变异非常重要。

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.