Subglottic stenosis due to an unexpected foreign body diagnosed after emergency tracheostomy in a child

Background Subglottic stenosis is a known complication of traumatic and prolonged endotracheal intubation. It is rare that the causes of severe subglottic stenosis are revealed to be an unexpected foreign body after airway securement in a child. Subglottic stenosis in a child is often associated with airway emergency, and management of difficult airway may be required. Case presentation We report the case of an 8-year-old girl with severe subglottic stenosis who required emergency tracheostomy. Emergency tracheostomy was performed under regional anesthesia. Sevoflurane was administered with sufficient titration to maintain spontaneous breathing. At first, the cause of severe subglottic stenosis was thought to be a traumatic event that had occurred 1 month previously; however, subsequent laryngoscopy revealed that the cause of subglottic stenosis was a foreign body. Conclusions Management of the airway in a child with severe subglottic stenosis should be selected according to each patient’s individual circumstances.