Congenital brain tumors are very rare; their incidence is estimated at 0.34
per million live births. We report a case of congenital gliosarcoma in a n
eonate conceived by in vitro fertilization (IVF). One other case of brain t
umor (medulloblastoma) is reported in a child born after assisted conceptio
n. Whether these tumors are causally related to the IVF remains obscure.