Mitral valve fluttering; an echocardiographic feature of left atrial myxoma.

A patient with crescendo angina and severe three-vessel coronary disease had a left atrial myxoma found incidentally and which was removed during coronary bypass surgery. Preoperative echocardiogram revealed only coarse diastolic mitral valve fluttering without other echocardiographic features of left atrial myxoma. Postoperative echocardiogram showed disappearance of mitral valve fluttering. The isolated finding of diastolic mitral valve fluttering by echocardiography may be associated with occult left atrial myxoma.