How will I know if I have lung cancer?
You may not know. Early lung cancer rarely causes symptoms. In its advanced stage, cancer may affect how your lungs work. Coughing, wheezing, or shortness of breath may be the first symptoms of lung cancer.
Lung cancer may spread (metastasize) to nearby lymph nodes, the other lung, or other tissues in the chest, such as the lining of the lungs or heart. In many people, lung cancer may also spread to other organs—such as the brain, liver, or bones—causing symptoms for which you might seek medical care.
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