Background: Endoscopic removal is the most common method for removal of tracheal stents. Few studies have reported the technique of fluoroscopy-guided stent removal for tracheal fistula and tracheal stenosis. We aimed to study the safety and efficacy of fluoroscopy-guided stent removal as well as the optimal duration for stent usage.
Methods: We conducted a retrospective analysis of 152 patients who underwent fluoroscopy-guided stent removal from January 2011 to June 2017. Reasons for stent implantation were tracheal fistula in 85 patients (TF group), and tracheal stenosis in 67 patients (TS group). All patients underwent tracheal CT scans before stent removal and during follow up. The technical success rate, complications, and survival rate were compared between the two groups.
Results: The technical success rate of stent removal was 98.9% and 97.4%, respectively for the TF and TS group. Removal was routine for half of patients, and in the remainder, excessive granulation tissue was the common indications for stent removal, which was found after stenting at 142.1±25.9 days in the TF group, and at 89.9±15.0 day in the TS group. The total incidence of complications was 21.1% and 22.4%, respectively, for the TF and TS groups. Perioperative death occurred in one patient in the TF group, and two patients in the TS group. Recurrence of fistula or stenosis requiring re-stenting was the most comment complication in both groups. The 0.5-, 3-, 6-year survival rates were 90.3%, 59.6%, and 36.1% for TF group, and 80.4%, 75.7%, 75.7% for TS group.
Conclusions: Fluoroscopic removal of tracheal stents is safe and effective for both tracheal fistula and tracheal stenosis, with no significant difference in outcomes. Clinicians should pay attention to the risk of hemoptysis for patients with malignant tumors and a combination with endoscopic hemostasis may help improve its safety.

Figure 1

Figure 2

Figure 3
This is a list of supplementary files associated with this preprint. Click to download.
Video 1. Stent removal for straight tracheal stent.
Video 2. Stent removal for Y-type tracheal stent.
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On 11 Feb, 2020
On 11 Feb, 2020
On 09 Nov, 2020
On 08 Nov, 2020
On 08 Nov, 2020
On 08 Nov, 2020
Posted 28 Oct, 2020
On 22 Oct, 2020
On 21 Oct, 2020
On 21 Oct, 2020
Invitations sent on 14 Oct, 2020
On 14 Oct, 2020
On 27 Sep, 2020
On 26 Sep, 2020
On 26 Sep, 2020
Posted 26 Feb, 2020
On 15 Sep, 2020
Received 11 Sep, 2020
On 21 Jul, 2020
On 20 Jul, 2020
Invitations sent on 20 Jul, 2020
On 19 Jul, 2020
On 19 Jul, 2020
Received 17 Jun, 2020
On 03 Jun, 2020
Received 02 Apr, 2020
On 01 Apr, 2020
Invitations sent on 04 Mar, 2020
On 12 Feb, 2020
On 11 Feb, 2020
On 11 Feb, 2020
On 11 Feb, 2020
Background: Endoscopic removal is the most common method for removal of tracheal stents. Few studies have reported the technique of fluoroscopy-guided stent removal for tracheal fistula and tracheal stenosis. We aimed to study the safety and efficacy of fluoroscopy-guided stent removal as well as the optimal duration for stent usage.
Methods: We conducted a retrospective analysis of 152 patients who underwent fluoroscopy-guided stent removal from January 2011 to June 2017. Reasons for stent implantation were tracheal fistula in 85 patients (TF group), and tracheal stenosis in 67 patients (TS group). All patients underwent tracheal CT scans before stent removal and during follow up. The technical success rate, complications, and survival rate were compared between the two groups.
Results: The technical success rate of stent removal was 98.9% and 97.4%, respectively for the TF and TS group. Removal was routine for half of patients, and in the remainder, excessive granulation tissue was the common indications for stent removal, which was found after stenting at 142.1±25.9 days in the TF group, and at 89.9±15.0 day in the TS group. The total incidence of complications was 21.1% and 22.4%, respectively, for the TF and TS groups. Perioperative death occurred in one patient in the TF group, and two patients in the TS group. Recurrence of fistula or stenosis requiring re-stenting was the most comment complication in both groups. The 0.5-, 3-, 6-year survival rates were 90.3%, 59.6%, and 36.1% for TF group, and 80.4%, 75.7%, 75.7% for TS group.
Conclusions: Fluoroscopic removal of tracheal stents is safe and effective for both tracheal fistula and tracheal stenosis, with no significant difference in outcomes. Clinicians should pay attention to the risk of hemoptysis for patients with malignant tumors and a combination with endoscopic hemostasis may help improve its safety.

Figure 1

Figure 2

Figure 3
This is a list of supplementary files associated with this preprint. Click to download.
Video 1. Stent removal for straight tracheal stent.
Video 2. Stent removal for Y-type tracheal stent.
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