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Subglottic cysts (SGCs) are a rare cause of respiratory distress resulting from upper airway obstruction in infants and young children. Risk factors other than prematurity with a history of endotracheal intubation have not yet been well elucidated. Therefore, we aimed to describe the clinical features and analyze the risk factors of SGCs.Methods. We conducted a retrospective review of medical records of pediatric patients who underwent marsupialization for SGCs between January 2017 and March 2022. These records were then compared with those of controls with a history of neonatal intubation, with a case-to-control ratio of 1:3.Results. Eleven patients (eight boys and three girls) diagnosed with SGCs and 33 control patients (26 boys and seven girls) were included. All patients had a history of premature birth and neonatal intubation. Symptoms of SGCs appeared at a mean age of 8.2 months (range, 1\u201314 months) after extubation. The mean duration of intubation was 21.5 days (range, 2\u201390 days), and the intubation period was longer in patients with SGCs than in controls (21.5\u00b124.8 days vs. 5.3\u00b17.1 days; P&lt;0.001). Furthermore, gestational age (28.3\u00b14.2 weeks vs. 33.8\u00b14.4 weeks; P=0.001) and birth weight (1,134.1\u00b1515.1 g vs. 2,178.2\u00b1910.1 g; P=0.001) were significantly lower in patients with SGCs than in controls. Multivariable analysis identified the intubation period as an independent risk factor.Conclusion. This study showed that gestational age, birth weight, and the intubation period were significantly associated with the development of SGCs. Pediatric patients presenting with progressive dyspnea who have the corresponding risk factors should undergo early laryngoscopy for the differential diagnosis of SGC.<\/jats:p>","DOI":"10.21053\/ceo.2023.00031","type":"journal-article","created":{"date-parts":[[2023,2,17]],"date-time":"2023-02-17T05:06:13Z","timestamp":1676610373000},"page":"177-183","update-policy":"https:\/\/doi.org\/10.21053\/crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["The Clinical Features and Risk Factors of Subglottic Cysts in Children: A Clinical Experience Using the Spontaneous Respiration Technique"],"prefix":"10.21053","volume":"16","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7156-993X","authenticated-orcid":true,"given":"Seung 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