TES and chronic obstructive pulmonary disease: Results showed that old age (p = 0.0294), stage III (p = 0.0079), Testin low expression (p < 0.0001), N1-N3 (p = 0.0053), low-medium differentiation (p = 0.0438), invasion (p < 0.0001), group of PRISm or COPD (p = 0.0082) were associated with poor prognosis for disease-free survival (DFS).