Interarterial course of the right coronary artery
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If the RCAright coronary artery (RCA) has an aberrant origin from the the left coronary sinus, it can have an inter-arterial course where it passes to the right between the ascending aorta and the pulmonary trunk. It is a rare variant of RCA anatomy.
It is described as malignant as the vessel can be extrinsically compressed by the two large arterial structures, leading to RCA territory myocardial ischemia, myocardial infarction or sudden cardiac death especially in the athletic young population.
The orifice is often 'slit' like, contributing due to the risk of cardiac events from impairedit's oblique orientation which can also contribute to impaired RCA blood flow.
-<p>If the RCA has an aberrant origin from the the left coronary sinus, it can have an inter-arterial course where it passes to the right between the ascending aorta and the pulmonary trunk. It is described as <em>malignant</em> as the vessel can be extrinsically compressed by the two large arterial structures, leading to RCA territory myocardial ischemia, <a title="Myocardial infarction" href="/articles/myocardial-infarction">myocardial infarction</a> or sudden cardiac death. The orifice is often 'slit' like, contributing to the risk of cardiac events from impaired RCA blood flow.</p>- +<p>If the <a href="/articles/right-coronary-artery">right coronary artery (RCA)</a> has an aberrant origin from the the <strong>left</strong> coronary sinus, it can have an inter-arterial course where it passes to the right between the ascending aorta and the pulmonary trunk. It is a rare variant of RCA anatomy.</p><p>It is described as <em>malignant</em> as the vessel can be extrinsically compressed by the two large arterial structures, leading to RCA territory myocardial ischemia, <a href="/articles/myocardial-infarction">myocardial infarction</a> or sudden cardiac death especially in the athletic young population.</p><p>The orifice is often 'slit' like due to it's oblique orientation which can also contribute to impaired RCA blood flow.</p>
References changed:
- 1. Satija B, Sanyal K, Katyayni K. Malignant anomalous right coronary artery detected by multidetector row computed tomography coronary angiography. J Cardiovasc Dis Res. 2012;3 (1): 40-2. <a href="http://dx.doi.org/10.4103/0975-3583.91598">doi:10.4103/0975-3583.91598</a> - <a href="http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3271681">Free text at pubmed</a> - <a href="http://www.ncbi.nlm.nih.gov/pubmed/22346145">Pubmed citation</a><span class="auto"></span>
Tags changed:
- variants
- rca
- ctca
Sections changed:
- Anatomy
Systems changed:
- Cardiac
- Vascular
Images Changes:
Image 1 CT (ECG-gated CTCA) ( create )
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