Fig. 1

Images of central lung cancer-associated airway obstruction and its treatment with a Y-shape Sigma stent plus I¹²⁵brachytherapy. Panel A: Image of airway obstruction by a malignant tumor located at carina of trachea. Panel B: Image of Y-shape Sigma stent, which was installed at trachea as well as left and right main bronchi following debulking resection of the lung cancer at carina of trachea. Panel C and D: Follow-up images of chest CT after one week of the stent installation. Panel E and F: Images under rigid bronchoscopy after one month of installment of the stent loaded with I¹²⁵. Panel G: Image of carina as well as left and right main bronchi under rigid bronchoscopy after removal of stent at 6 months follow-up