[Mediastinal emphysema caused by tracheal tube replacement during the operation of laryngeal cancer complicated with tracheal diverticulum: a case report].

The incidence of the tracheal diverticulum is low, and its risk to surgery and anesthesia has not been emphasized. This article reports a case of laryngeal cancer complicated with tracheal diverticulum, which was successfully rescued after mediastinal emphysema caused by the intraoperative replacement of a tracheal catheter. Operations such as anesthesia intubation may lead to severe complications such as pneumothorax due to diverticulum rupture, and the surgical team should pay more attention to the tracheal diverticulum.