title: Atresia of coronary sinus ostium with coronary venous flow to left atrium.
abstract: The rare cardiac anomaly of atresia of the coronary sinus ostium with a large communication between the coronary sinus and the left atrium was discovered during a mitral valve replacement operation in a 44-year-old woman.
mesh_terms: D000328:Adult; D006348:Cardiac Surgical Procedures / Q000379:methods*; D005260:Female; D006330:Heart Defects, Congenital / Q000150:complications / Q000601:surgery*; D006349:Heart Valve Diseases / Q000209:etiology / Q000601:surgery*; D006801:Humans; D008943:Mitral Valve; D012214:Rheumatic Heart Disease / Q000150:complications / Q000601:surgery*