Objective To evaluate echocardiography in diagnosis and differential diagnosis of Ebstein anomaly,absence of tricuspid valve and dysphasia of tricuspid valve.

• 目的总结超声心动图准确诊断及鉴别诊断三尖瓣下移畸形、三尖瓣缺如及三尖瓣发育不全的问题并提出改进意见。