Short answers, pulled from the story.
Only 374 cases of lung cancer were tabulated in medical literature by 1912. This low number reflected the rarity of the disease before the mass production of cigarettes in the 20th century.
The United States Surgeon General published a report in January 1964 that concluded cigarette smoking far outweighs all other factors in causing lung cancer. This report followed the 1962 conclusion by the United Kingdom's Royal College of Physicians.
Radon exposure is responsible for between 3 and 14 percent of lung cancer cases. This risk increases significantly when combined with cigarette smoking due to a synergistic effect.
The five-year survival rate for stage IA1 lung cancer is 92 percent. This stage represents the earliest TNM stage where cancer is limited to smaller tumors.
Around 3,200 US dollars was spent on lung cancer research per US death in 2022. This amount is considerably lower than the funding per death for brain cancer or breast cancer.