Background: Congenital high airway obstruction syndrome (CHAOS) is a rare fetal anomaly characterized by obstruction of the higher fetal airway. This could be either complete or incomplete and is more commonly seen at the subglottic level, resulting in a spectrum of characteristic secondary features.
Case Report: In this case study, we report two cases of CHAOS with one showing laryngeal atresia and the other, tracheal atresia.