Ectopic and atretic ostium of left main coronary artery: from interleaflet triangle between left and noncoronary
Ta-Chung Shen1, Hsin-Hua Chou, Kuei-Ton Tsai
1Division of Cardiovascular Surgery, Department of Surgery, Buddhist Tzu Chi General Hospital, Taipei Branch, New Taipei City 23142, Taiwan. frederick_shen@tzuchi.com.tw
Abstract:
Left main coronary artery atresia is an extremely rare coronary anomaly in which there is no left coronary ostium and the left main trunk ends blindly. Ectopic origin of the left coronary artery from the left ventricle is an even rarer condition. Herein, we describe the case of a 37-year-old woman whose left main coronary artery atresia was not corrected during previous surgical correction of patent ductus arteriosus and aortic insufficiency. Five years after that first operation, the patient developed severe angina and heart failure. She underwent coronary artery bypass grafting with greater saphenous vein directly to the left main coronary artery trunk, along with associated procedures. The operative findings revealed an ectopic and atretic ostium of the left main coronary artery from the interleaflet triangle between the left and noncoronary cusps, which we believe is a specific congenital coronary anomaly.
Related Concept Videos
Coronary Circulation
Coronary circulation begins at the base of the aorta, where two main arteries arise—the left and right coronary arteries. These arteries encircle the heart in the coronary sulcus and supply the...
Chambers of the Heart
Deoxygenated blood from the body is received in the right...
Cardiac Catheterization III: Left Heart Catheterization
Physiology of the Heart: The Cardiac Cycle
Diastole: The Relaxation Phase
During diastole, all four heart chambers relax. The atrioventricular (AV) valves open, and the semilunar valves close. This phase sees the lowest chamber pressures, promoting ventricular filling. Venous blood enters the heart through the...
Mitral Stenosis I: Introduction
Mitral Stenosis II: Clinical features and Diagnostic Tests


