超声心动图是确诊左房粘液瘤的一种灵敏、可靠的诊断方法,然而,在二尖瓣狭窄、二尖瓣脱垂并发感染性或血栓性心内膜炎,形成巨大的赘生物或球形血栓时,其超声心动图所见与左房粘液瘤相似,有时很堆鉴别。本文报道1例风湿性心瓣膜病二尖瓣狭窄合并巨大球形血栓,术前二维超声心动图探查情况。 Echocardiography is a sensitive and reliable method for diagnosing left atrial myxoma. However, in the case of mitral stenosis, mitral valve prolapse and infectious or thrombotic endocarditis, giant vegetation or spheres are formed. At the time of thrombosis, echocardiography was similar to that seen in left atrial myxoma, and it was sometimes identified as a heap. This article reports a case of mitral valve stenosis with giant spherical thrombus in rheumatic heart valve disease, preoperative two-dimensional echocardiography exploration situation.