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. Common sites of spread are the brain, the other lung, the liver, lymph nodes, and bone. Therefore, smoking tobacco is the major cause of lung cancers. Lung cancer may grow for a long time without producing any symptoms. The cancer may be quite advanced by the time you have symptoms.