What Is Non-Small Cell Lung Cancer?
Lung cancer is an abnormal growth of cells in the lungs. These abnormal cells form tumors that damage the normal functioning of the lungs. Without treatment, non-small cell lung cancer can spread throughout the body, causing damage to other organ systems. Edwin Tan / Getty Images Sometimes non-small cell lung cancer does not produce any noticeable signs and symptoms. The main differences between the two are the size of the cancer cells when examined under a microscope....