This is a 30-year-old-woman, primigravida, referred to our unit at 22 weeks. The first scan performed at 15 weeks was normal except for a cardiac hyperechogenic focus. The karyotype and viral test were negative. 女性患者,30岁,初次妊娠。孕22周来我中心咨询,其第一次检查在孕15周,当时除发现有心脏强回声光斑外均正常。染色体和病毒测试结果阴性。