An unsuspected congenital laryngeal atresia with an associated tracheoesophageal fistula.

摘要

Sir-A recent review evaluated the sonographic and magnetic resonance imaging (MRI) findings of trache-olaryngeal obstruction in the fetus describing the causes of obstruction and the management options (1). Fetal tracheolaryngeal obstruction is a life-threatening condition with substantial morbidity and mortality which is reported up to 80-100% when this condition is unrecognized before delivery (1). Congenital laryn-geal atresia (LA), resulting from the failure of larynx and trachea to canalize during embryogenesis, is one of the intrinsic causes of neonatal tracheolaryngeal obstruction. LA is a rare malformation characterized by a congenital high airway obstruction (2) and it can be diagnosed prenatally by ultrasonography identification of some peculiar signs of congenital high airway obstruction syndrome (CHAOS). Fetal MRI allows a more detailed definition of the level of the obstruction and the airways anatomy (1).