Transthoracic echocardiography (TTE) (apical 4-chamber view): A, fibrotic elastic mitral valve leaflets with restricted motion that dome during diastole (arrows), significant left atrial enlargement; B, severe calcification at the posterior commissure (arrow), thickened chordae tendineae, left atrial enlargement. LA, left atrium; LV, left ventricle; RA, right atrium; RV, right ventricle.