Wikipedia:Today's featured article/July 5, 2023

Lung cancer is a disease of uncontrolled cell growth that begins in the lung. It is the most diagnosed cancer worldwide and the leading cause of cancer death. Those with early lung cancer often have no symptoms, but advanced disease can cause shortness of breath, coughing (including with blood), and chest pain. The cancer can spread to other organs, increasing both the variety of symptoms and the likelihood of death. Lung cancer is treated with surgery and chemotherapy, followed by newer targeted molecular therapies and immunotherapy. Prognosis is poor, with around 19 percent of people surviving five years from their diagnoses. Lung cancer used to be a rare disease, but its incidence rose dramatically following the mass popularity of cigarettes in the 20th century. Up to 90 percent of lung cancer cases are caused by exposure to tobacco smoke, with the remainder caused by genetic factors, radon gas, asbestos, and air pollution.