Willens H J, Levy R, Perez A
Department of Medicine, Memorial Hospital, Hollywood, Florida 33021.
Echocardiography. 1994 Jan;11(1):39-45. doi: 10.1111/j.1540-8175.1994.tb01044.x.
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.
二尖瓣附属组织是心内肿块和瓣膜下左心室流出道梗阻的罕见原因。经胸二维和多普勒超声心动图有助于这种先天性异常的术前诊断。然而，经胸二维超声心动图不能识别或正确诊断所有二尖瓣附属组织病例。我们报告一例患者，经胸超声心动图检测到的心内肿块经食管超声心动图明确诊断为二尖瓣附属组织。
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