Lung cancer is responsible for the most cancer-related deaths for both men and women throughout the world. The American Cancer Society estimated that 228,190 new cases of lung cancer in the U.S. were diagnosed and 159,480 deaths due to lung cancer occurred in 2013.
Lung cancer was not common prior to the 1930s, but increased dramatically over the following decades as tobaccosmoking increased. In many developing countries, the incidence of lung cancer is beginning to fall because of education about the dangers of cigarette smoking and effective smoking cessation programs. Nevertheless, lungcancer remains the most common form of cancer in men worldwide and the fifth most common form of cancer in women.
Your doctor may suspect lung cancer if a routine physical exam reveals:
Swollen lymph nodes above the collarbone
A mass in the abdomen
Abnormal sounds in the lungs
Dullness when the chest is tapped
Rounding of the fingernails
Weakness in one arm
Expanded veins in the arms, chest, or neck