[Prenatal diagnosis of vasa previa with velamentous cord insertion, using Doppler color echography].

We report a case of prenatal diagnosis of vasa previa, using colour Doppler imaging. This affection is rare, but can be responsible for very severe fetal complications during the delivery. Elements of the diagnosis were demonstrated in the clinical case and discussed. This is a new use of transvaginal colour Doppler in Obstetrics.