TITULO: Actualización en marcadores genéticos ultrasonográficos del 1º trimestre del embarazo. TITLE: Actualization regarding genetic sonographic markers in the 1º trimester

The topic of sonographic markers in the first trimester of pregnancy is reviewed, in order to provide an update. The predictive markers on the most frequent congenital anomalies are emphasized. It was concluded with important aspects that should be considered for a correct interpretation of these findings.