Abstract
A vallecular cyst is a rare cause of upper airway obstruction in neonates and infants. Symptoms include stridor, failure to thrive, obstructive breathing and respiratory distress. We present a case of a 2-month-old infant with poor weight gain and feeding difficulties. The diagnosis was initially missed due to a concomitant viral infection. The patient underwent transoral marsupialisation with complete resolution of symptoms. Vallecular cysts should be included in the differential diagnosis of children with stridor and dysphagia. Diagnosis is primarily by laryngoscopy. The preferred treatment is marsupialisation, which is less invasive than complete excision and has low risk of recurrence.