stage IA non-small cell lung cancerListen to pronunciation(... sel lung KAN-ser)Stage I non-small cell lung cancer is divided into stages IA and IB. In stage IA, the tumor is in the lung only and is 3 centimeters or smaller. Cancer has not spread to the lymph nodes.More InformationNon-Small Cell Lung Cancer TreatmentEnlarge this image in new windowStage IA lung cancer. The tumor is in the lung only and is 3 centimeters or smaller. Cancer has not spread to the lymph nodes.Search NCI's Dictionary of Cancer TermsStarts withContainsBrowse:ABCDEFGHIJKLMNOPQRSTUVWXYZ#