A Rare Case Report: Thyrolingual Trunk and The Absence of Facial Artery Determined by 3D-CTA

Abstract

Thyrolingual trunk (TLT), arising from the branches of the external carotid artery (ECA), is well-known to be an anatomical variation. However, TLT may rarely originate from the common carotid artery (CCA). Here, we report a 59-year-old male patient with a diagnosis of cerebrovascular disease in whom TLT arising from the left CCA was incidentally determined by three dimensional angiography performed in order to evaluate carotid stenosis and intracranial vascular structures. TLT arose from the left CCA anterior and at its point of origin, infundibular dilatation was observed. On the right side, however, superficial temporal artery STA was originated from the CCA anterior. In addition, the facial artery (FA) was absent on the left, which is a rare variation. Awareness of variations in the cervical region is of great importance for the diagnosis of the pathologies and treatment. Key words: Common Carotid Artery; External Carotid Artery; Thyrolingual Trunk; Multidetector Computed Tomography.

Keywords

• Common Carotid Artery; External Carotid Artery; Thyrolingual Trunk; Multidetector Computed Tomography.

Nadir Görülen Bir Vaka: 3D-CTA ile Tanımlanmış Truncus Thyrolingualis ve Arteria Facialis Yokluğu

Öz

Arteria carotis externa'nın (ECA) dallarından ayrılan truncus thyrolingualis'in (TLT) anatomik bir varyasyon olduğu iyi bilinmektedir. Ancak TLT nadiren de olsa arteria carotis communis'ten (CCA) köken almaktadır. Biz burada 59 yaşında tanımlanmış serebrovasküler hastalığı (SVH) olan bir erkek hastada karotis stenozunu ve intrakraniyal vasküler yapıları değerlendirmek amacıyla üç boyutlu CT anjiyografi (3D-CTA) çekilmesi sonucunda rastladığımız sol CCA'dan köken alan TLT olgusunu sunmaktayız. TLT, sol CCA'nın anterior yüzünden ayrılmaktaydı. TLT'nin CCA'dan çıkış yerinde infundibuler dilatasyon meydana gelmişti. Sağ tarafta ise süperfisyal temporal arter (STA), CCA anterior yüzünden çıkmaktaydı. Ayrıca bu vakada rastladığımız nadir görülen bir varyasyon da arteria facialis (FA) yokluğuydu. Sağ tarafta FA gözlenirken sol tarafın FA'sı gözlenmemiştir. Boyun bölgesine ait arter varyasyonlarının bilinmesi bu bölgeye ait patolojilerin tanı ve tedavisi açısından oldukça önemlidir. Anahtar kelimeler: Arteria Carotis Communis; Arteria Carotis Externa; Truncus Thyrolingualis; Multidetektör Bilgisayarlı Tomografi.

Anahtar Kelimeler

• Arteria Carotis Communis; Arteria Carotis Externa; Truncus Thyrolingualis; Multidetektör Bilgisayarlı Tomografi.

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