[Anencephaly associated with hydramnios. A case diagnosed late by ultrasonographic examination in the third trimester of pregnancy].

The authors report a case of anencephaly seen in the maternity unit of the Yaounde Teaching Hospital Group (Cameroon). This case of fetal malformation complicated by acute hydramnios was diagnosed late by ultrasonography during the 37th week after the LMP. Ultrasonographic findings as well as clinical management are described. Referring to the literature, the authors stress the need to seek fetal malformations in hydramniotic pregnancies. Only routine ultrasonography during pregnancy enables the early discovery of fetal malformations, this forming the basis of management decisions.