International Journal of Academic Health and Medical Research (IJAHMR)   Year: 2021 | Volume: 5 | Issue: 3 | Page No.: 27-29 DANDY-WALKER SYNDROME:antenatal diagnosis: About a case and review of the literature. Mehdi laaouze, Sarah seghrouchni idrissi, karam mohammed saoud, Mamouni Nisrine, Sanae Errarhay, Bouchikhi Shehrazad, Abd Aziz Banani Abstract: Dandy-Walker syndrome (DWS) is a rare cerebral malformation that can be isolated or associated with other malformations. The diagnosis can be made antenatally or postnatally, and the prognosis is related to the importance of the underlying hydrocephalus and to the frequent malformative associations. Through an observation and review of the literature, we will try to establish the contribution of obstetrical ultrasound and fetal MRI in the antenatal diagnosis of Dandy-Walker syndrome, and the role of the derivation methods in the symptomatic management.