Sometimes lung cancer does not cause any symptoms and is found during a routine chest x-ray. Symptoms may be caused by lung cancer or by other conditions. A doctor should be consulted if any of the following problems occur:
- A cough that doesn’t go away.
- Trouble breathing.
- Chest discomfort.
- Wheezing.
- Streaks of blood in sputum (mucus coughed up from the lungs).
- Hoarseness.
- Loss of appetite.
- Weight loss for no known reason.
- Feeling very tired.
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