[Prenatal diagnosis of cerebral tumors and differential diagnosis]

Fetal brain tumors are rare and have different histologies. Although the definitive diagnosis relies on the histopathology of the tumor, it is useful to distinguish the tumors potentially curable from the tumors rapidly fatal after birth. Nevertheless, some intracranial masses are not tumors. We report four cases of intracerebral masses diagnosed prenatally corresponding to different histological lesions: teratoma, fetus-in-fetu, chraniopharyngioma, hemangioma. We discuss the elements of the differential diagnosis, which can be identified prenatally.