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 Does coughing up phlegm mean I have lung cancer?
- Q Is a dry cough a symptom of lung cancer?
- Q Could my cough be telling me that I have cancer?
- Q Should I talk to my doctor about my lung cancer symptoms?
- Q Is cyanosis a symptom of lung cancer?
- Q What could cause my toes to bump upward at the tips?