[Interventional treatment of tracheoesophageal/bronchoesophageal fistulas]. 
A tracheoesophageal fistula is the formation of an abnormal communication between the airway and the esophagus.  Acquired tracheoesophageal fistulas can be benign or malignant.  The management is either surgical or endoscopic depending on the etiology, size and anatomy of the fistula as well as on the patient's performance status.  The interventional treatment of choice is endoscopic stent implantation.  In general, tracheoesophageal fistulas in patients with benign conditions are managed surgically.  If the patient is unfit for surgery silicone stents should be used because they can be more easily removed after a longer indwelling time compared to metal stents.  Malignant fistulas are associated with very limited life expectancy of only a few weeks or months.  In this situation fully covered self-expandable metal stents (FC-SEMS) are recommended, whereas surgical treatment approaches can only be considered in individual cases.  Depending on the location of the fistula and the presence of an airway stenosis, tracheal stenting, esophageal stenting or parallel stenting of the trachea and the esophagus is carried out.  Successful stent placement leads to immediate palliation of symptoms, such as cough or aspiration and results in a higher quality of life.  Potential complications are stent migration, bleeding of the upper gastrointestinal tract, arrosion of neighboring organs and vessels with esophageal stents as well as secretion retention and obstruction with displacement of the airway with tracheobronchial stents.