Cigarette smoking is the most important risk factor in the development of lung cancer. It is estimated that as many as 90 percent of lung cancer diagnoses could be prevented if cigarette smoking were eliminated. Environmental tobacco smoke in non-smokers also increases a person’s risk of developing lung cancer.
The most common signs of lung cancer are:
• Persistent cough
• Sputum streaked with blood
• Chest painRecurring pneumonia or bronchitis
- Q What are the early symptoms of lung cancer?
- Q Does coughing up phlegm mean I have lung cancer?
- Q What are the symptoms of lung cancer in the outer part of the lung?
- Q What are the most common signs of lung cancer?
- Q Is a dry cough a symptom of lung cancer?
- Q Should I talk to my doctor about my lung cancer symptoms?