International journal of pediatric otorhinolaryngology
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In the newborn, severe airway obstruction is a rare occurrence. The possible etiologies include a broad spectrum of diseases with laryngeal cysts an unusual cause. ⋯ In all three, cases the laryngeal cystic structure extended through the cricothyroid membrane and in two, pathologically contained both mesodermal and endodermal elements suggesting a laryngotracheal duplication cyst anomaly, previously unreported. Laryngofissure can be safely employed for complete excision even in the neonatal period.