Prenatal ultrasound diagnosis of fetal maxillofacial teratoma: Two case reports

Figure 1 Prenatal ultrasound of a teratoma at 16 weeks of gestation (case 1). A: Cystic-solid echo of the fetal orofacial exophytic process (orange arrows); B: Microvascular flow imaging showed that blood flow originates from the deep oral cavity.

Figure 2 Prenatal ultrasound of an orofacial teratoma at 16 weeks of gestation (case 2). A: Cystic-solid echo of the fetal face (orange arrow); B: Microvascular flow imaging superimposed on section A, showing slightly abundant blood flow signals in the interior.

Figure 3 Gross specimen after induction of labor (case 1). A: Three-dimensional ultrasound imaging of the fetal face shows the outline of the mass (white arrows); B: The gross specimen after induction showed an extraoral mass with a disorderly structure, originating from the palate.

Figure 4 Gross specimen after induction of labor (case 2). A: Three-dimensional crystal imaging of the fetal face shows the internal outline of the mass in the coronal plane (white arrows); B: After induction of labor, the gross specimen showed swelling of the neck and dark color.