Working with asbestos, radiation, arsenic, chromates, nickel, chloromethyl ethers, mustard gas, and coke-oven emissions has been linked with lung cancer, although usually only in people who also smoke cigarettes. The role of air pollution in causing lung cancer is still uncertain. Exposure to radon gas in homes may be important in a small number of cases. Occasionally, lung cancers, especially adenocarcinoma and alveolar cell carcinoma, develop in people whose lungs have been scarred by other lung diseases, such as tuberculosis and fibrosis. Although this cancer can be a single growth, it often develops in more than one area of the lung at once.
Lymphoma is a cancer of the lymphatic system.
It may start in the lungs or spread to them. Many cancers that start elsewhere in the body spread to the lungs. Cancers spread to the lungs most commonly from the breast, colon, prostate, kidney, thyroid, stomach, cervix, rectum, testis, bone, and skin. The symptoms of lung cancer depend on its type, its location, and the way it spreads. Usually, the main symptom is a persistent cough.