Retrostyloid and retromandibular courses of the external carotid artery.

IF 1.4 4区医学 Q2 Medicine

Surgical and Radiologic Anatomy Pub Date : 2024-12-09 DOI:10.1007/s00276-024-03546-z

Nektaria Karangeli, George Triantafyllou, Fabrice Duparc, Katerina Vassiou, Marianna Vlychou, George Tsakotos, Maria Piagkou

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引用次数: 0

Abstract

Background: The external carotid artery (ECA) branching pattern has been extensively studied in the current literature. However, its topographical variability has been barely reported. The aim of the current study was to assess the ECA in relationship with the styloid process (SP) and the mandible.

Materials: 100 computed tomography angiograms were randomly selected and retrospectively investigated on the neck region for the ECA course in relation to the SP and the mandible.

Results: A retrostyloid course of the ECA was identified on 18 sides (9%). Six patients had a bilateral retrostyloid ECA, and six patients had a unilateral variant. The side and sexes did not affect the prevalence of this variant. The elongated SP or variable ossification of the stylohyoid chain did not affect the retrostyloid course. The ECA retromandibular course of type 1 (straight course deep to the ramus of the mandible) was identified in 30.5%, type 2 (lateral retromandibular loop) in 20%, and type 3 (lateral retromandibular loop behind the ramus of the mandible) in 45.5%. The side and sexes did not affect the prevalence of this variant.

Conclusions: Our study enhances the current knowledge on the ECA topography. Both variants investigated in the current study, displace the ECA into the parapharyngeal space. Knowledge of these anatomic variations are of importance preoperatively to avoid iatrogenic injuries.

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颈外动脉茎突后和下颌后的路线。

背景：当前文献对颈外动脉（ECA）分支模式进行了广泛的研究。然而，其地形变异性几乎没有报道。目前研究的目的是评估ECA与茎突（SP）和下颌骨的关系。材料：随机选择100张ct血管造影照片，回顾性研究颈区与SP和下颌骨的ECA病程。结果：在18侧（9%）发现了ECA的茎突后程。6例患者有双侧茎突后ECA， 6例患者有单侧变异。侧面和性别不影响该变异的流行。茎突舌骨链的延长或可变骨化不影响茎突后的过程。1型（直行至下颌骨分支）的ECA下颌骨后袢占30.5%，2型（外侧下颌骨后袢）占20%，3型（下颌骨分支后外侧下颌骨后袢）占45.5%。侧面和性别不影响该变异的流行。结论：我们的研究增强了对ECA地形的现有认识。在目前的研究中调查的两种变异，将ECA置换到咽旁间隙。术前了解这些解剖变异对于避免医源性损伤是非常重要的。

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.