Nektaria Karangeli, George Triantafyllou, Fabrice Duparc, Katerina Vassiou, Marianna Vlychou, George Tsakotos, Maria Piagkou
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Retrostyloid and retromandibular courses of the external carotid artery.
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.
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.
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