Severe,multiple congenital malformations after a short carbimazole exposure

Abstract

We studied the case of a newborn infant with severe congenital malformations following carbimazole exposure during the early weeks of pregnancy. The pattern of these malformations – choanal atresia, tetralogy of Fallot, duodenal atresia, dysmorphic features, and hypothelia – is unusual and is consistent with methimazole embryopathy.