Anomalous origin of left main coronary artery from right sinus of valsalva.

Coronary artery anomalies are found in 0.6% to 1.55% of patients who undergo coronary artery radiographic tomography [1-5] and the increasing use of diagnostic coronary angiography (CAG) is uncovering even more such abnormalities. Anomalous origin of the left main coronary artery (LMCA) from the right sinus of Valsalva is reported in 0.09% to 0.15% of cases [1-6]. Indeed, most coronary anomalies are found incidentally during CAG. Although these anomalies are present at birth, relatively few manifest cardiac symptoms in childhood. Anomalous origin of a coronary artery does not usually lead to myocardial ischemia.