coronary artery congenital malformation malposition of the coronary ostium https://github.com/monarch-initiative/mondo/issues/6740 https://github.com/monarch-initiative/mondo/issues/6876 https://www.malacards.org/card/malposition_of_a_coronary_ostium Malposition of the coronary ostium is a rare coronary artery congenital malformation characterized by displacement of one of the coronary arteries, originating closer to the aortic root or to the commissural area. The anomaly is considered to be asymptomatic, however, it may impose surgical difficulties during aortic root surgery. GARD:0019645 Orphanet:99090 MONDO:0020426 MEDGEN:759190 UMLS:C3532077