[Non small cell lung carcinoma in never-smokers at the Liege University Hospital : a retrospective cohort study,...

Lung cancer is the third most common cancer in Belgium in 2017 and remains the leading cause of cancer death worldwide. There is no longer any doubt that the main cause of lung cancer is smoking. However, the prevalence of lung cancer in never-smokers has been increasing overtime. Moreover, it is now recognized that the lung cancer of non-smoker patients has very distinct characteristics. In this retrospective cohort study (N = 520), we describe the characteristics of non-smoker patients and their non-small cell lung carcinoma and compare them to those of smokers. The patients included in this study were whose with a new diagnostic of lung cancer made at the Liège University Hospital of Liège over 2 years round. Non small cell lung cancer occurring in never-smokers patients is more often seen in young and very old patients, more frequent in female, essentially adenocarcinoma and often associated with mutations. This work confirms that lung cancer in never-smokers shows different features than lung cancer seen in patients with a smoking history.