CARAT Case Studies: Coronary Artery Variants and Anomalies (CAVA)

Case Study A02-1: LCA from RC Sinus - Course Low between PA and Ao

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LCA_LAO 2 Cran 36
Classic appearance: distal connection of LM with LAD, large diagonal, a basal course to LCx and prominent LM axial septals.

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LCA_RAO 34 Cran 29
Demonstrates prominent axial perforators from LM segment.

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RCA_RAO 2 Cran 26
Video cut short but Type 2 LAD with single large PL seen.

Anatomy – An anomalous LCA origin from the RC Sinus can follow a pathway anterior to PA or behind the aorta, but most commonly between the PA and aorta.  In this position two variants are seen: a concave pathway low on sinus close to the septum is most common (seen in this example) and a convex pathway high on the sinus.

Construction - (Select Settings > Choose Button Q Nums.) Q1.4.2 template is used.

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