Lung cancer starts when cells in the lungs start to grow out of control resulting in a mass of abnormal cells. Lung cancer can spread to lymph nodes and other organs.
What is lung cancer?
Lung cancer, like other cancers, forms when cells in the body begin to grow out of control. The numerous cells form tumors that invade and destroy healthy tissue. There are two main types of lung cancer: small cell and non-small cell, which is the slower growing of the two.
Signs and symptoms of lung cancer