Fig. 2

A 55-year-old male patient underwent airway stent implantation due to esophageal cancer invading the airway. (A: The main airway is invaded by the tumor, causing airway narrowing. B: The tumor invaded the inner airway, causing luminal narrowing. C: Under ECMO support, the airway stent is successfully adjusted, and the narrowing is relieved. The arrow points to the tumor inside the airway.)