胎儿鼻泪管囊肿在临床较为少见,超声实际诊断中容易漏诊,通过对以下两个案例的探讨研究,掌握胎儿鼻泪管囊肿产前超声特征、鉴别诊断及其临床转归,为产前评估胎儿提供重要的依据。一、案例介绍案例1:孕妇22岁,孕2产0,无不良生育史及身体不适,孕28周来我院行常规产前超声检查,腹部超声扫查显示:双顶径74mm,股骨长54mm,羊水指数100mm,于右眼内眦的内下方探及一约9mm×8mm的无回声区 Fetal nasolacrimal duct cyst is relatively rare in clinical diagnosis of ultrasound easily missed diagnosis, through the following two case studies to understand fetal nasolacrimal duct prenatal ultrasound features, differential diagnosis and clinical outcomes for prenatal assessment Fetus provides an important basis. First, the case introduction Case 1: pregnant women 22 years old, 2 pregnant 0, no history of unborn childbirth and physical discomfort, 28 weeks pregnant our routine prenatal ultrasound, abdominal ultrasound scan showed: biparietal diameter 74mm, femoral long 54mm, amniotic fluid index 100mm, in the right eye within the lower part of the probe and exploration of a 9mm × 8mm anechoic area