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Table 1 Eighth edition of TNM staging of lung cancer [11]

From: The added value of18F-FDG PET/CT in staging non-small cell lung cancer

Category or stageDescriptor5-year survival rate (%)
T category
TXTumor in sputum and/or bronchial washings, not assessed at imaging or bronchoscopy 
T0No evidence of primary tumor 
TisCarcinoma in situ...
T1≤ 3 cm in longest axis...
T1a(mi)Minimally invasive adenocarcinoma...
T1a≤ 1 cm in the longest axis92
T1b> 1 to ≤ 2 cm in the longest axis83
T1c> 2 to ≤ 3 cm in the longest axis76
T2> 3 to ≤ 5 cm in the longest axis; involves the main bronchus, visceral pleura, or atelectasis or obstructive pneumonitis extending to the hilum67
T2a> 3 to ≤ 4 cm in the longest axis67
T2b> 4 to ≤ 5 cm in the longest axis60
T3> 5 to ≤ 7 cm in the longest axis; invades the chest wall, phrenic nerve, or parietal peri-cardium; or nodule in the same lobe as the primary tumor52
T4> 7 cm in the longest axis; invades the diaphragm, mediastinum, carina, trachea, heart, great vessels, recurrent laryngeal nerve, esophagus, or vertebral body; nodule in different ipsilateral lobes38
N category
N0No regional nodal metastases75
N1Metastasis in ipsilateral peribronchial or hilar nodes or intrapulmonary nodes49
N2Metastasis in ipsilateral mediastinal nodes or subcarinal nodes36
N3Metastasis in contralateral mediastinal, contralateral hilar, ipsilateral or contralateral scalene, or supraclavicular nodes20
M category
M0No distant metastasis 
M1aTumor nodule in contralateral lung; tumor with pleural or pericardial nodules or malignant pleural or pericardial effusion11.4
M1bSolitary single-organ extrathoracic metastasis11.4
M1cMultiple extrathoracic metastases in one or multiple organs6.3
Stage group
Stage IA1T1a(mi)N0 M0, T1aN0M092
Stage IA2T1bN0M083
Stage IA3T1cN0M077
Stage IBT2aN0M068
Stage IIAT2bN0M060
Stage IIBT1aN1M0, T1bN1M0, T1cN1M0, T2aN1M0, T2bN1M0, T3N0M053
Stage IIIAT1aN2M0, T1bN2M0, T1cN2M0, T2aN2M0, T2bN2M0, T3N1M0, T4 N0 M0,T4N1M036
Stage IIIBT1aN3M0, T1bN3M0, T1cN3M0, T2aN3M0, T2bN3M0, T3N2M0, T4N2M026
Stage IIICT3N3M0, T4N3M013
Stage IVAAny T, any N, M1a; any T, any N, M1b10
Stage IVBAny T, any N, M1c0