孕妇28岁,孕1产0。病史无特殊,孕23周行胎儿系统超声检查:腹部横切面:腹主动脉及下腔静脉位于中线左侧,胃泡位于中线偏右,胆囊位于中线偏左,未显示脾;四腔心切面:左右心房、心室大小对称,房间隔下部及室间隔上部回声连续性中断,左心房后壁光滑,未见明显肺静脉汇入,左心房与脊柱之间只显示降主动脉横断面,左心房后方未探及肺总静脉(图1)。超声诊断:右侧异构综合征、完全型 Pregnant women 28 years old, pregnant 1 produce 0. No history of special, 23 weeks pregnant fetus fetal system ultrasound examination: abdominal cross-section: the abdominal aorta and inferior vena cava in the left midline, the stomach bubble in the midline to the right, the gallbladder in the midline left, did not show the spleen; four-chamber heart section : Left and right atrium, symmetrical ventricular size, atrial septal inferior septal and upper echogenic continuity interrupted, left atrial posterior wall smooth, no significant pulmonary venous access, left atrium and spine shows only the descending aortic cross-section, left atrial posterior Not to explore the pulmonary vein (Figure 1). Ultrasound diagnosis: Heterogeneous right syndrome, complete type