Cancer refers to the uncontrolled growth of a specific body tissue.
In lung cancer or bronchogenic carcinoma, this growth start in the lungs. There are two main types of lung cancer, small cell and non-small cell. The non-small cell category includes adenocarcinoma, large cell lung cancer, and squatmous cell lung cancer. Lung cancer causes more cancer deaths in the U.S. than any other type of cancer. Problems associated with lung cancer can include blocked breathing tubes and infection.