Acquired subglottic cysts: management and long term outcome

Abstract

Objectives: To assess the diagnostic strategy, treatment and outcome of acquired subglottic cysts.

Materials and methods: Retrospective, monocentric, tertiary referential center study of 172 preterm neonates assessed by endoscopic examination over a 10 years period. Identification of patients presenting with subglottic cysts.

Results: 17 children were diagnosed with subglottic cysts. Among them, 98% were prematurates (28 ± 4 weeks of gestation), and 76% had a history of hyaline membrane disease or a bronchopulmonary dysplasia. All patients were intubated during the neonatal period, for a mean duration of 14 days. Mean age at diagnosis was 8 months. An associated laryngotracheal anomaly was diagnosed in 30% of cases. Six procedures, including flexible controls, were needed to achieve full recovery. We used cold steel microinstruments, CO(2) or Thulium LASER. Mean follow up was 3 years.

Conclusions: Acquired subglottic cysts concern early preterm infants. Children treated for subglottic cysts should undergo a long term follow up, as there is a trend for cysts to recur, as well as a risk of secondary subglottic stenosis.