Figure 8a. Epignathus. (a) Coronal US image obtained in the plane of the fetal nose (arrowhead) and lips shows a mass with cystic areas (curved arrow) and calcifications (straight arrow). (b) Three-dimensional reformatted image of the fetal head from an in utero CT examination shows the jaw held in an open position with obvious calcifications within the intraoral portion of the mass. (Reprinted, with permission, from reference 31.)