Cancer is in the lung only. Stage I is divided into stages IA and IB based on the size or location of the tumor.
STAGE I NON-SMALL CELL LUNG CANCER
Meaning of STAGE I NON-SMALL CELL LUNG CANCER in English
NCI English Dictionary of Cancer Terms. Английский словарь раковых терминов NCI(Национальный институт злокачественных новообразований). 2012