| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| T1: Lung tumor 3 cm or less in greatest dimension, surrounded by lung or visceral pleura, without bronchoscopic evidence of invasion more proximal than the lobar bronchus | Is a | False | Lung TNM finding | Inferred relationship | Existential restriction modifier |  | 
| T2:Lung tumor with any of these features:>3cm in greatest dimension, involves main bronchus >2cm distal to carina;invades visceral pleura;assoc with atelectasis/obstructive pneumonitis extends to hilar region, does not involve entire lung | Is a | False | Lung TNM finding | Inferred relationship | Existential restriction modifier |  | 
| pM1: Distant metastasis, includes separate tumor nodule(s) in a different lobe (ipsilateral or contralateral) (lung) | Is a | False | Lung TNM finding | Inferred relationship | Existential restriction modifier |  | 
| pN1: Metastasis in ipsilateral peribronchial and/or ipsilateral hilar lymph nodes, including intrapulmonary nodes involved by direct extension of the primary tumor (lung) | Is a | False | Lung TNM finding | Inferred relationship | Existential restriction modifier |  | 
| pN2: Metastasis to ipsilateral mediastinal and/or subcarinal lymph nodes(s) (lung) | Is a | False | Lung TNM finding | Inferred relationship | Existential restriction modifier |  | 
| pN3: Metastasis to contralateral mediastinal, contralateral hilar, ipsilateral or contralateral scalene, or supraclavicular lymph nodes(s) (lung) | Is a | False | Lung TNM finding | Inferred relationship | Existential restriction modifier |  | 
| pT3:Tumor directly invades any of following:chest wall,diaphragm,mediastinal pleura,parietal pericardium;or tumor in main bronchus<2 cm distal to carina(not involving it);or assoc atelectasis or obstructive pneumonitis of whole lung | Is a | False | Lung TNM finding | Inferred relationship | Existential restriction modifier |  | 
| pT4: Tumor of lung as per American Joint Committee on Cancer 6th Edition definition (lung) | Is a | False | Lung TNM finding | Inferred relationship | Existential restriction modifier |  | 
| pTX: Primary tumor cannot be assessed, or tumor proven by the presence of malignant cells in sputum or bronchial washings but not visualized by imaging or bronchoscopy (lung) | Is a | False | Lung TNM finding | Inferred relationship | Existential restriction modifier |  |