Lung cancer is the leading cause of cancer death. Smoking cigarettes, pipes and cigars are the greatest risk factors for getting lung cancer. Exposure to secondary cigarette smoke and to certain industrial substances, especially asbestos and radiation also are risk factors.
Warning signs:
- There may be no early signs of lung cancer. The most common symptoms are a nagging cough and spitting up blood. Then the person may experience pneumonia, fever, weight loss and chest pain.