Congenital Giant Epignathus with Intracranial Extension in a Fetal

A 355 g male fetus was aborted at gestation age of 17 weeks and 6 days by a 31 years old healthy woman with her first gravidity at Haidian Maternal and Children Health Hospital. An ultrasound scan showed no anomaly at 12th gestational weeks (GWs). Down syndrome screening test showed a high risk of open neural tube defects at 16th GW. Three‐dimensional ultrasound scan indicated an irregular anechoic mass of the size 7.0 cm × 4.6 cm arising from the fetus’s right maxillofacial region at 17th GW [Figure 1a]. Chromosomal analysis showed a normal male karyotype.