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Benign Tracheobronchial Strictures: Long-Term Results and Factors Affecting Airway Patency After Temporary Stent Placement

Jin Hyoung Kim1, Ji Hoon Shin1, Ho-Young Song1, Tae Sun Shim1, Chang Jin Yoon2 and Gi-Young Ko1

1 Department of Radiology, Asan Medical Center, University of Ulsan College of Medicine, 388-1, Poongnap-dong, Songpa-gu, Seoul 138-736, South Korea.
2 Department of Radiology, Seoul National University Bundang Hospital, Seoul, South Korea.


Figure 1
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  		Fig. 1A —Fluoroscopic images obtained during stent removal in 52-year-old woman with a left main bronchial stricture caused by endobronchial tuberculosis. Sheath with dilator is passed down over guidewire into proximal stent lumen, and dilator is replaced with hookwire.

 

Figure 2
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  		Fig. 1B —Fluoroscopic images obtained during stent removal in 52-year-old woman with a left main bronchial stricture caused by endobronchial tuberculosis. Sheath (arrows) with hookwire (arrowhead) is then pulled out of stent so that hook grasps nylon drawstring of stent.

 

Figure 3
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  		Fig. 1C —Fluoroscopic images obtained during stent removal in 52-year-old woman with a left main bronchial stricture caused by endobronchial tuberculosis. Proximal end of stent collapses while hookwire is withdrawing drawstring into sheath. Entire assembly is then pulled out of bronchus.

 

Figure 4
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  		Fig. 2 —Cumulative maintained patency rate after temporary stenting (Kaplan-Meier analysis).

 

Figure 5
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  		Fig. 3 —Cumulative patency rate after temporary stenting according to duration of stent placement in benign tracheobronchial strictures (Kaplan-Meier analysis). Patients with 2-month stenting are represented by solid line, and patients with 6-month stenting are represented by broken line.

 

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