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

Case Study A02-5: LCA from RC Sinus - Course Low between PA and Ao and dLAD separately supplied from RCA coursing anterior to PA

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LAO 2 Cran 34
Spatial orientation of long anomalous LCA, perforators, LCA and anomalous dRCA well seen.

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LAO 39 Cran 2
Long anomalous LM segment with perforators.

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AP Cran_RCA Only

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LCA_AP Cran

Anatomy – Anomalous vessels that course anterior to the PA include RCA from mid LAD, a distal LAD from the RCA and rarely a LCA from the RC Cusp. This example is essentially a LCA from the RC cusp coursing low in front of the aortic sinus with the more distal LAD and its branches supplied by a second anomalous vessel originating from the RC Cusp and travelling anterior to the aorta.

Construction – (Select Settings > Choose Button Q Nums.) Template button Q1.4.2 sets the stage for is anomaly; Q3.1.A.9 presents the anomalous distal LAD variation.

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