91 - Unraveling the Uncommon–clinical Implications of an Atypical Common Carotid Artery: Case Report

Poster Board Number: 91
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Co-authors:

Kathryn Thomas - Sam Houston State University-COM; Mario Loomis - Sam Houston State University-COM; Jailenne Quiñones-Rodríguez - Sam Houston State University-COM

Abstract Body : The common carotid artery (CCA) is a major blood vessel in the neck that supplies blood to the head and neck region. Anatomical variations in the CCA can occur, which may involve the branching pattern, the origin, or other structural aspects of the artery. Knowledge of anatomical variations is essential during vascular surgical procedures, such as carotid endarterectomy or arterial bypass surgeries. Surgeons must adapt their approach based on the specific anatomy of the patient to minimize complications. We report a unilateral variation of the right CCA in a Caucasian young female cadaver. After the division of the CCA, the branches twisted at C5-6 vertebral level before traveling into the head and neck. The internal carotid artery crosses posterior and medial to the right external carotid artery to enter the skull through the petrous portion of the temporal bone. Physician understanding of potential internal and external carotid route variations to the skull is vital when considering imaging studies, including angiograms, CT scans, and MRIs. In addition, a more profound comprehension is crucial in planning interventions such as stent placement or angioplasty for carotid artery stenosis. The choice of devices and techniques may be influenced by the specific anatomy of the common carotid artery. We aim to describe possible embryological factors influencing this anatomical variation and potential clinical implications. Awareness of anatomical variations in the common carotid artery is crucial for healthcare professionals across various specialties. This knowledge contributes to accurate diagnosis, effective treatment planning, and improved outcomes for patients undergoing vascular interventions or dealing with vascular conditions in the neck and head.