Fetal Oropharyngeal Teratoma: Prenatal Diagnosis and Imaging Characteristics.

Fetal oropharyngeal teratoma (OPT) is an extremely rare disorder. This generally originates from the upper jaws that are connected to the hard palate. Pregnant women with fetal OPT usually present with oropharyngeal mass and polyhydramnios. Ultrasound can help in the pre-natal diagnosis of this condition, although magnetic resonance imaging (MRI) is useful for further characterization of the lesion. Because of severe obstruction to airways, OPTs are associated with high morbidity and mortality rates during peripartum period. We present here a case of fetal OPT with imaging characteristics with respect to the antenatal diagnosis.