Lung cancer is the third most common cancer in the United States. Each year, about 225,000 people in the country are diagnosed. Doctors classify lung cancer into types depending on the way cancer ...

Although they are different conditions, there are similarities between bronchiolitis and bronchitis. Both conditions cause inflammation, for example, but they affect different areas of the lung. The ...

Lung cancer occurs when cells inside the lungs grow out of control. The cancer can start in the bronchi, the tubes that allow air to move from the trachea into the lungs; bronchioles, the tiny tubes ...