Fig. 2From: Tracheotomy-coblation for acquired subglottic tracheal stenosis: a case reportOperation procedures. a. The trachea was cut open to expose the anterior tracheal wall. b. The coblator was used to remove the tracheal scar. c. After coblation, the tracheal cavity was normal without obstruction. d. Placement of the Montgomery 16#T-tubeBack to article page