[Testicular feminization syndrome. Prenatal diagnosis: observations apropos of 2 sisters].

The anatomo-clinical aspects and the physiopathology of the feminizing testicle syndrome, are now better known. The prenatal diagnosis of this familial genetic ailment through the determination of the fetal sex by ultrasonography and the study of fetal karyotypes by amniotic fluid analysis or biopsy of trophoblast, is currently possible. Risk groups must be defined in order to ensure a better care for these children.