PT - JOURNAL ARTICLE AU - Samuel Peter Last AU - Heather Isabel Patterson AU - Neil Hauser AU - Shyan Vijayasekaran TI - Congenital subglottic cyst: a rare cause for sudden airway compromise in a newborn AID - 10.1136/bcr-2022-253750 DP - 2023 Feb 01 TA - BMJ Case Reports PG - e253750 VI - 16 IP - 2 4099 - http://casereports.bmj.com/content/16/2/e253750.short 4100 - http://casereports.bmj.com/content/16/2/e253750.full SO - BMJ Case Reports2023 Feb 01; 16 AB - A full-term infant developed stridor, respiratory distress and hypercarbia shortly after birth requiring urgent airway intervention. The patient underwent urgent intubation via rigid bronchoscopy. The diagnosis of congenital subglottic cyst was made. The cyst was decompressed and the patient was extubated the following day. On repeat laryngoscopy 1 month later, there was no residual disease and the patient remained symptom free. Congenital subglottic cysts are extremely rare and the diagnosis can be either missed or misdiagnosed with more common causes of stridor, such as laryngomalacia. Subglottic cysts may cause total airway obstruction and even death if they are large enough and not treated immediately.