Piegger,J.; Kovacs,P.; Ambach,E.;

Coronary artery anomalies, especially variations in the level of origin, are frequent. In most cases, the origin lies just a few millimeters superior to the supravalvular ridge; ectopic origins of more than one centimeter above this border are rare. We report a case in which the right coronary artery arises from the ascending aorta 38 mm above the supravalvular ridge

Clin.Anat. 2001 14(5):369-372
PubMed: 11754226