Trachea, Bronchus, and Lung Cancers

~1.8 million deaths per year. The deadliest cancer by death toll. 5-year survival rate is still only 22% in the US, worse in developing countries. Smoking causes 80% of cases, but lung cancer in never-smokers is rising — now the 7th most common cancer globally. Early detection via low-dose CT screening can reduce mortality by 20%. Source: WHO.