 The American Joint Committee on Cancer (AJCC) and the International Union Against Cancer (UICC) recommend TNM staging, using a uniform scheme for non-small cell lung carcinoma, small-cell lung carcinoma and broncho-pulmonary carcinoid tumors.With TNM staging, the cancer is classified based on the size of the tumor and spread to lymph nodes and other organs.As the tumor grows in size and the areas affected become larger, the staging of the cancer becomes more advanced as well.