ISSN 1662-4009 (online)

ey0017.3-6 | Congenital hypothyroidism | ESPEYB17

3.6. Neonatal screening for congenital hypothyroidism: what can we learn from discordant twins?

E Medda , MC Vigone , A Cassio , F Calaciura , P Costa , G Weber , T de Filippis , G Gelmini , M Di Frenna , S Caiulo , R Ortolano , D Rotondi , M Bartolucci , R Gelsomino , S De Angelis , M Gabbianelli , L Persani , A Olivieri

To read the full abstract: J Clin Endocrinol Metab. 2019;104:5765–5779.It is not clear whether retesting is needed for a healthy cotwin of a twin pair discordant for congenital hypothyroidism (CH) at the first neonatal screening. Medda et al. retrospectively analyzed a cohort of 47 twin pairs discordant for CH at the first neonatal screening. On follow-up, 7 (15%) of cotwins who were initially negatively screened then tested positi...