A nonbifurcating cervical carotid artery with a remnant of the proximal internal carotid artery that mimicked an aneurysm on magnetic resonance angiography.

IF 1.2 4区医学 Q3 ANATOMY & MORPHOLOGY Surgical and Radiologic Anatomy Pub Date : 2023-10-01 Epub Date: 2023-08-10 DOI:10.1007/s00276-023-03231-7

Akira Uchino, Shoichiro Ishihara

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Abstract

Purpose: To describe a case of a nonbifurcating cervical carotid artery with remnant of the proximal internal carotid artery (ICA).

Methods: A 47-year-old man with unruptured cerebral aneurysm underwent magnetic resonance (MR) angiography of the neck region and intracranial region. The MR machine was a 3-T scanner. Catheter angiography was performed for the treatment of the aneurysm by coil embolization.

Results: The proximal main trunk of the left external carotid artery (ECA) was absent, and branches arose separately, indicative of a nonbifurcating cervical carotid artery. At the level of the ICA origin, aneurysmal protrusion was found on MR angiography. On catheter angiography, this protrusion was not an aneurysm but a remnant of the proximal ICA.

Conclusion: The configuration of the nonbifurcating cervical carotid artery lacks the proximal ECA; however, segmental agenesis of the proximal ICA forms this rare cervical arterial variation. The present case had remnants of the proximal ICA. We speculate that the ICA channel, except for the origin, was occluded after the development of EC-ICA anastomosis, and a nonbifurcating cervical carotid artery with a remnant of the ICA may have formed. Including our patient, only four cases have been reported in the relevant English-language literature.

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一种非分叉颈动脉，其近端颈内动脉的残余部分在磁共振血管造影术中模仿动脉瘤。

目的：描述一例非分叉颈动脉伴颈内动脉近端残余的病例。方法：对一名47岁未破裂的脑动脉瘤患者进行颈部和颅内磁共振（MR）血管造影术。MR机器是一台3-T扫描仪。导管血管造影术通过线圈栓塞治疗动脉瘤。结果：左侧颈外动脉（ECA）近端主干缺失，分支单独出现，表明颈动脉未分叉。在ICA起源的水平上，MR血管造影术发现动脉瘤突出。在导管血管造影术中，这种突出不是动脉瘤，而是近端ICA的残余。结论：非分叉颈动脉构型缺少近端ECA；然而，近端ICA的节段性发育不全形成了这种罕见的颈动脉变异。本病例有近端ICA残留。我们推测，在EC-ICA吻合后，除起源外，ICA通道被阻断，可能形成了一条带有残余ICA的非分叉颈动脉。包括我们的患者在内，相关的英语文献中只报道了四例病例。

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 ANATOMY & MORPHOLOGY-RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING

CiteScore

2.70

自引率

14.30%

发文量

183

审稿时长

4-8 weeks

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.