Anomalous origin of the circumflex artery with retro-aortic course

Case contributed by Kamel Mahmoud Alkhateeb , 19 Jul 2021
Diagnosis certain
Changed by Henry Knipe, 6 Oct 2022
Disclosures - updated 6 Apr 2022:
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Updates to Study Attributes

Findings was changed:

Anomalous origin and course of left circumflex artery (LCx) (type III): LCX LCx originates from proximal right coronary RCA (just next to RCA origin from right coronary sinus), then LCX. LCx has a retro-aortic course, passing between the aorta and left atrium. It is non-dominant and patent with no evidence of plaque or stenosis.

Updates to Case Attributes

Body was changed:

An anomalous origin of LCXthe left circumflex artery from the right coronary sinus is the most common congenital variant and is divided into three types II:

  • - Type I: Separate ostia for right coronary artery (RCA) and LCX.

  • - Type II: Common ostia in the right sinus.

  • - Type III: LCX arising as a branch of the proximal RCA.

These patients may develop coronary symptoms due to kinking/compression in theirof a retroaortic course.

  • -<p>An anomalous origin of LCX from right coronary sinus is the most common congenital variant and is divided into three types II:</p><p>- Type I: Separate ostia for right coronary artery (RCA) and LCX.</p><p>- Type II: Common ostia in the right sinus.</p><p>- Type III: LCX arising as a branch of the proximal RCA.</p><p>These patients may develop coronary symptoms due to kinking/compression in their retroaortic course.</p>
  • +<p>An anomalous origin of the <a href="/articles/circumflex-artery" title="Left circumflex artery">left circumflex artery</a> from the right coronary sinus is the most common congenital variant and is divided into three types:</p><ul>
  • +<li><p>Type I: Separate ostia for right coronary artery (RCA) and LCX.</p></li>
  • +<li><p>Type II: Common ostia in the right sinus.</p></li>
  • +<li><p>Type III: LCX arising as a branch of the proximal RCA.</p></li>
  • +</ul><p>These patients may develop coronary symptoms due to kinking/compression of a retroaortic course.</p>

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