When lung cells start expanding uncontrollably as a result of damaging mutations, lung cancer results. Tumors created by these proliferating cells impair regular lung function. Cancers that spread from other organs to the lungs are referred to as metastatic cancers, whereas lung cancer starts in the airways or small air sacs.
Small cell lung cancer (SCLC)
A cancer that grows more quickly, is more difficult to cure, and frequently spreads early. Types include combined SCLC and small cell (oat cell) carcinoma.
Non-small cell lung cancer (NSCLC)
More than 80% of cases of lung cancer are adenocarcinoma, squamous cell carcinoma, and less common types like sarcomatoid and adenosquamous carcinoma.
Other lung-area cancers
Although they are not considered lung cancer, lymphomas, sarcomas, and pleural mesothelioma can also develop in or near the lungs; however, they are treated differently.
Hoarse voice
Shoulder pain
Reduced appetite
Coughing up blood
Constant tiredness
Unexplained weight loss
Chest discomfort or pain
Wheezing or noisy breathing
Persistent or worsening cough
Shortness of breath or breathing difficulty
Swelling of the face, neck, arms or upper chest
Drooping eyelid and small pupil on one side (Horner’s syndrome)