Antenatal detection of a thyrocervical teratoma in the third trimester - A case report.

Introduction: Congenital teratomas are rare with less than 10% found in the cervical region. When they do occur in the neck, they are usually identified during the third trimester and, due to their location, they are associated with polyhydramnios.

Case Report: Cervical teratoma was identified at 32 weeks gestation during a routine scan of a 33-year-old female expecting dichorionic diamniotic twins.