A case study of a fetal lingual dermoid cyst is presented. The cystic mass was seen protruding from the base of the tongue through the open fetal mouth. Teratomas, although usually benign, can result in a poor neonatal outcome if the respiratory tract is obstructed. The perinatal diagnosis of an oral mass will alert the obstetrician to the possible need to deliver at a tertiary-care center where a team of specialists can be available to aid in the establishment of the newborn's airway.
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