A stent is a tubular support placed inside a blood vessel, canal, or duct to either aid in healing or to relieve an obstruction or narrowing that has occurred in a structure. Patients with conditions such as tracheal collapse and cancer of the trachea may be candidates for placement of tracheal stents. Self-expanding stents are placed in a given patient with the help of our fluoroscopy unit, which is real time x-ray.