孕妇,26岁,孕1产0,孕28周,否认孕期前后有不良环境接触史、家族遗传史。胎儿心脏超声检查:四腔心切面,胎儿房室比例失调,左房室明显扩大,于左室内探及一37.6mm×31.3mm×33.0mm等回声椭圆形实性包块,边界清,可见一长蒂连于左室游离壁(图1),随心脏收缩而微动,其内部回声均质,二尖瓣血流受压向室间隔侧偏移(图2)。于胎儿心包腔内可示散在无回声区,最宽处位于右室前 Pregnant women, 26 years old, pregnant 1 produce 0, 28 weeks of pregnancy, denied a history of adverse environmental exposure before and after pregnancy, family history. Fetal heart ultrasound examination: four-chamber heart section, fetal atrioventricular imbalance, the left atrium was significantly expanded in the left ventricular exploration and a 37.6mm × 31.3mm × 33.0mm and other echogenic oval-shaped mass, clear boundary, showing a Long pedicle connected to the left ventricular free wall (Figure 1), with the heart and neck fretting, the internal echo homogeneous, mitral flow pressure to the ventricular septal side shift (Figure 2). In the fetal pericardial cavity can be scattered in the echo-free zone, the widest point in the right ventricle