Fig. 2

A 16-year-old male underwent tracheal covered stent implantation for more than 3 months due to benign tracheal stenosis. The patient subsequently experienced difficulty in breathing for more than 5 days. Bronchoscopy showed a large amount of granulation tissue at the upper and lower ends of the stent. DSA (A) showed that the tracheal stent was completely expanded in the main trachea. DSA (B) showed that stent-removal hook hooked the lower end of the tracheal stent. DSA (C–D) showed that the procedure involves hooking of the lower stent end with the stent taking out the hook, pulling of the stent taking out the hook outward, inward stent turning, and peeling off and pulling it out of the body. The patient’s dyspnea improved after the stent was removed