Diagnosis of accessory mitral valve tissue by transesophageal echocardiography.
Accessory mitral valve tissue is a rare cause of intracardiac mass and subvalvular left ventricular outflow tract obstruction.  The preoperative diagnosis of this congenital anomaly has been facilitated by transthoracic two-dimensional and Doppler echocardiography.  However, transthoracic two-dimensional echocardiography cannot identify or correctly diagnose all cases of accessory mitral valve tissue.  We report a patient in whom an intracardiac mass detected by transthoracic echocardiography was definitively diagnosed as accessory mitral valve tissue by transesophageal echocardiography.
Department of Medicine, Memorial Hospital, Hollywood, Florida 33021.
H J
HJ
Willens
R
R
Levy
A
A
Perez
D000328:Adult; D017548:Echocardiography, Transesophageal; D006330:Heart Defects, Congenital / Q000000981:diagnostic imaging / Q000503:physiopathology; D006349:Heart Valve Diseases / Q000000981:diagnostic imaging* / Q000503:physiopathology; D006801:Humans; D008297:Male; D008943:Mitral Valve / Q000002:abnormalities / Q000000981:diagnostic imaging* / Q000503:physiopathology; D014694:Ventricular Outflow Obstruction / Q000000981:diagnostic imaging* / Q000209:etiology