[First arch syndrome: ultrasonic diagnosis].

  title={[First arch syndrome: ultrasonic diagnosis].},
  author={Jos{\'e} Antonio Castillo Bustos and Michel Biron and Rub{\'e}n P. Mayorga and P Daza and M A Paublo},
  journal={Revista chilena de obstetricia y ginecologia},
  volume={56 5},
A facial malformation was diagnosed by ultrasonography, the case correspond to First Arch syndrome, the findings are micrognathia, polyhydramnios, low-set ears and absence of stomach bubble. The heterogeneity of this syndrome and his relationship with environmental agents is analyzed.