[Neonatal screening of congenital hypothyroidism. Introduction].

Neonatal screening of congenital hypothyroidism will be generalized in France during the next year, after it has been experienced in three regional areas. The data obtained from these experiences have shown that TSH assay is probably the safest way to detect most cases of thyroid failure in newborns. The Round Table organized by the Societé Française d'Endocrinologie has given opportunity to discuss previous trials and their results, and to prepare the large-scale organization of this new progress in preventive medicine.