Thomas M R, Jayakrishnan A G, Desai J, Monaghan M J, Jewitt D E
Department of Cardiology, King's College Hospital, London.
J Am Soc Echocardiogr. 1993 Jan-Feb;6(1):83-6. doi: 10.1016/s0894-7317(14)80260-5.
Primary mitral valve tumors are rare. We describe the transesophageal appearances of a papillary fibroelastoma (Lambl's giant excrescence) of the anterior mitral valve leaflet causing partial mitral valve obstruction. Transesophageal echocardiography proved particularly useful in identifying the limited attachment of the tumor to the anterior mitral valve leaflet and excluding its attachment to the interatrial septum. These features helped to exclude the possibility of the tumor being a left atrial myxoma, the primary differential diagnosis of the lesion. Transesophageal echocardiography enabled the planned surgical option to be mitral valve repair and also allowed intraoperative monitoring to assess the results of the surgical repair.
原发性二尖瓣肿瘤较为罕见。我们描述了一例二尖瓣前叶乳头状纤维弹性瘤（兰布尔巨大赘生物）导致二尖瓣部分梗阻的经食管超声心动图表现。经食管超声心动图在识别肿瘤与二尖瓣前叶的有限附着并排除其与房间隔的附着方面特别有用。这些特征有助于排除该肿瘤为左房黏液瘤的可能性，而左房黏液瘤是该病变的主要鉴别诊断。经食管超声心动图使得计划中的手术方案为二尖瓣修复成为可能，并且还能在术中进行监测以评估手术修复的效果。
