Distinguishing between lung cancer and infections like bronchitis or pneumonia is crucial. Lung infections can spread through the air, while lung cancer is often linked to smoking and family history. Symptoms of a chest infection include cough, phlegm, and fever, but if these persist for over three weeks, consult a doctor to rule out cancer. Additional lung cancer symptoms include blood in cough, unrelenting pain, hoarse voice, appetite loss, and weight loss. Early diagnosis is vital for effective treatment.


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