The fetus then died in utero at 32 weeks gestation. Placental examination revealed a massive retroplacenteal hematoma, probably the cause of intrauterine death.

Fetopathology examination revealed a tumor arising from the nasopharynx (cavum), protruding through the oropharynx and oral cavity, and also invading the central base of the skull around the pituitary fossa. The fetus itself had normal morphology otherwise and a mild intrauterine growth restriction (-2 weeks gestation).

Histology of the tumor showed a mix of epithelial, bone, chondroid and immature nervous tissues.
Our final diagnosis was nasopharyngeal immature teratoma, also called epignathus teratoma.

Thanks to my dear colleagues Dr Fabrice Cuillier, Dr Marie Balu, Dr Carla Fernandez.