“…They are usually suspected in the ultrasound of the 2nd or 3rd trimester, due to the appearance of a well-defined intracranial mass often associated with hydrocephalus, polyhydramnios, hydrops fetal, and even fetal death (3). They have a high growth potential, with tumor sizes greater than 5 cm being observed at the time of their presentation (2,4). The definitive diagnosis, however, is established in the histological study of the tumor piece (5,6).…”