- Limited stage disease(AJCC, 2009 version 7), stage I-III(T any, N any, M0) that can be safely treated with definitive radiation doses, excludes T3-4 due to multiple lung nodules that are too extensive or have tumor/nodal volume that is too large to be encompassed in a tolerable radiation plan, clinical nonmalignant diagnosis by investigator when the pleural is too few to obtain cytological evidence.