Lung cancer types. There are two main types of lung cancer: small cell lung cancer (SCLC) and non-small lung cancer (NSCLC). Non-small cell and small cell lung cancers are classified according to cell size and type.NSCLC accounts for nearly nine out of every 10 cases.here are two main types of lung cancer: small cell lung cancer (SCLC) and non-small lung cancer (NSCLC). Non-small cell and small cell lung cancers are classified according to cell size and type.