Dictionary of Cancer Terms
View in Spanish: Cáncer de pulmón
Lung cancer (lung KAN-ser)
Cancer that forms in tissues of the lung, usually in the cells lining air passages. The two main types are small cell lung cancer and non-small cell lung cancer. These types are diagnosed based on how the cells look under a microscope.
Source: National Cancer Institute Dictionary of Cancer Terms, available at www.cancer.gov/dictionary.