Cancer symptoms: The early signs of lung cancer you need to know
The fact that early lung cancer symptoms are difficult to detect means that by the time most people are diagnosed, the tumour has already spread to other organs. Lung cancer can start developing in the windpipe, the main airway or the lungs. It develops when there is uncontrolled growth of abnormal cells inside one of both lungs. More than eight out of 10 cases of lung cancer in the UK are caused by smoking.
Persistent cough
While lung cancer is not the most common cause of a chronic cough, it is a possibility.
About half of people diagnosed with lung cancer have a persistent cough.
A cough associated with a cold of a respiratory infection will go away in a week or so, but a persistent cough that lingers can be a symptom of lung cancer.
A chronic cough can last for up to eight weeks.
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