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Updated: Aug 15, 2026

Transthoracic Echocardiography in Mice
Published on: May 28, 2010
Diagnosis of accessory mitral valve tissue by transesophageal echocardiography
1Department of Medicine, Memorial Hospital, Hollywood, Florida 33021.
Abstract:
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.
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