Progress in high-risk screening for lung cancer in patients of chronic obstructive pulmonary disease

Lung cancer and chronic obstructive pulmonary disease (COPD) are two closely related diseases, which have a great impact on public health.Annual low-dose computed tomography screening of the chest can significantly reduce lung cancer mortality.COPD is associated with an increased risk of lung cancer.Epidemiological studies have found that the risk of lung cancer in COPD patients is 2 to 4 times higher than that in patients without airflow obstruction.The increased risk of COPD lung cancer appears to be due to emphysema.Emphysema has been proved to be an important risk factor for lung cancer.The screening score of COPD lung cancer to determine the high risk population of COPD lung cancer is a useful exploration of lung cancer screening in COPD population, which needs more clinical practices to prove. Key words: Pulmonary disease, chronic obstructive; Lung neoplasms; Pulmonary emphysema; Screening