Use of Endoscopically Placed Expandable Nitinol Tracheal Stents in the Treatment of Tracheal Stenosis

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Abstract
Objective: To evaluate the potential utility of a new endoscopically placed expandable tracheal stent in the treatment of benign symptomatic stenoses of the cervical trachea. Study Design: Pilot study utilizing a prospectively followed case series. Methods: An initial group of six patients undergoing stent placement was examined with rigid and flexible endoscopy under anesthesia immediately following stent placement and at postoperative 6 to 8 weeks. Subsequently each patient was followed clinically for a minimum of 6 months. Results: All stents were well tolerated with no observed complications. Immediate reversal of symptomatic airway obstruction without the need for adjunctive tracheotomy was noted in every patient. At 6 weeks, endoscopic confirmation of complete intraluminal mucosalization without formation of any granulation tissue or scar bands within the stented areas was noted in each case. Conclusions: This preliminary pilot study supports the use of nitinol expandable tracheal stents as an alternative in the treatment of benign symptomatic tracheal stenoses.