In its early stages, lung cancer normally has no symptoms. When symptoms start to appear, they are usually caused by blocked breathing passages or the spread of cancer further into the lung, surrounding structures, other parts of the body.
Lung cancer symptoms may include:
Chronic, hacking, raspy coughing, sometimes with blood-streaked mucus
Recurring respiratory infections, including bronchitis or pneumonia
Increasing shortness of breath, wheezing, persistent chest pain