Summary
The anomalous first parts of the left and right subclavian aa. had no inferior thyroid aa. in the neck region. The thyroidea ima a. was found to arise from the brachiocephalic trunk, and bifurcated into two branches almost immediately after its origin. These branches ascended in front of the trachea and entered the bases of the right and left lobes of the thyroid gland. The left vertebral a. arose from the aortic arch in the superior mediastinum. The possible existence of this anomaly is important for parathyroid localization studies, in neck surgery and especially in tracheostomy.
Résumé
Les parties intiales des artères subclavières gauche et droite étaient anormales. Elles ne donnaient pas, dans la région cervicale, d'artère thyroïdienne inférieure. L'artère thyroidea ima naissait du tronc brachio-céphalique et se bifurquait, peu après son origine, en deux branches. Ces branches avaient un trajet ascendant ventralement à la trachée et pénétraient le pôle inférieur des lobes droit et gauche de la glande thyroïde. L'artère vertébrale gauche provenait de l'arc aortique et se situait dans le médiastin supérieur. La possibilité d'une telle anomalie est importante à connaître dans la recherche du site des glandes parathyroïdes et dans la chirurgie du cou, spécialement au cours des trachéotomies.
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Yilmaz, E., Çelik, H., Durgun, B. et al. Arteria thyroidea ima arising from the brachiocephalic trunk with bilateral absence of inferior thyroid arteries: a case report. Surg Radiol Anat 15, 197–199 (1993). https://doi.org/10.1007/BF01627705
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DOI: https://doi.org/10.1007/BF01627705