associated cardiac conditions were severe rheumatic mitral regurgitation ( 3 cases ) , cardiomyopathy ( 5 ) , atrial tumors ( 2 ) , infective endocarditis ( 1 ) , paroxysmal atrial tachycardia of infants ( 4 ) , idiopathic paroxysmal atrial fibrillation ( 1 ) , marfan 's syndrome with mitral regurgitation ( 1 ) , endocardial fibroelastosis ( 1 ) , and structural congenital heart malformations ( 17 ) .
C0018787
cardiac
C0014117
endocardial fibroelastosis