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Anomalous Origins of the Bilateral Vertebral Arteries Arising from the Aortic Arch: A Case Report

대동맥궁에서 기시하는 양측 추골동맥의 이상기시: 증례 보고

  • Changhyun Park (Department of Radiology, Ilsan Paik Hospital, Inje University College of Medicine) ;
  • Byung Hoon Lee (Department of Radiology, Ilsan Paik Hospital, Inje University College of Medicine)
  • 박창현 (인제대학교 의과대학 일산백병원 영상의학과) ;
  • 이병훈 (인제대학교 의과대학 일산백병원 영상의학과)
  • Received : 2020.03.26
  • Accepted : 2020.07.03
  • Published : 2021.05.01

Abstract

Various anomalous origins of the vertebral arteries (VAs) have been reported. However, anomalous origins of the bilateral VAs arising directly from the aortic arch are extremely rare. We encountered a 60-year-old male who developed sudden-onset right hemiparesis with an incidentally discovered rare origins of the bilateral VAs from aortic arch. CT angiography demonstratedt he right VA originating from the aortic arch distal to the left subclavian artery and left VA originating from the aortic arch between the left common carotid artery and the left subclavian artery. The possible embryological mechanism of this variant was also reviewed. If the VA can not be found in the usual position during the procedure, a rare variant of the VA with anomalous origin should be considered. Understanding these variations is important to avoid unexpected events during endovascular procedures or surgery.

추골동맥의 기시부 변이의 다양성은 여러 문헌에서 보고되어 왔다. 그러나, 양측 추골동맥이 직접 대동맥궁으로부터 기시하는 변이는 매우 드물다. 이번 증례는 갑작스럽게 발생한 우측 편마비를 주소로 내원한 60세의 남자 환자에서 우연히 발견된 드문 양측 추골동맥 기시부의 변이를 보여준다. CT 혈관조영술에서 우측 추골동맥은 대동맥궁의 좌측 쇄골하정맥의 원위부에서 기시하였고, 좌측 추골동맥은 대동맥궁의 좌측 총경동맥과 쇄골하정맥의 사이에서 기시하였다. 이 변이와 연관이 있을 수 있는 발생학적인 기전도 고찰하였다. 추골동맥 기시부의 드문 변이의 가능성은 추골동맥이 일반적인 위치에서 보이지 않을 때 고려되어야 한다. 이 변이를 이해하는 것은 혈관 내 치료나 수술 중에 예기치 않은 합병증을 피하기 위해 중요하다.

Keywords

References

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