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Copyright ©The Author(s) 2015.
World J Clin Cases. Dec 16, 2015; 3(12): 980-983
Published online Dec 16, 2015. doi: 10.12998/wjcc.v3.i12.980
Table 2 Masaoka-Koga staging system
StageDefinition
IEncapsulated tumor with no gross or microscopic invasion
IIMacroscopic invasion into the mediastinal fat or pleura or microscopic invasion into the capsule
IIIInvasion of the pericardium, great vessels, or lung
IVAPleural or pericardial dissemination
IVBLymphogenous or hematogenous metastasis