Fetal Medicine is a field dedicated to the study of fetal development, congenital abnormalities and disease processes that may pose a threat to the fetus. It evolved tremendously in the past 20 years because of advancements in instrumentation allowing access to the intrauterine environment (ultrasonography, embryoscopy, fetoscopy, chorionic villus sampling, amniocentesis, cordocentesis and fetal surgery), developments in genetics and a better understanding of maternal diseases that may affect the pregnancy and the fetus.