Table 1. IASLC TNM staging for thymic malignancy.
| Stage | Details |
|---|---|
| T1 | a: Encapsulated or unencapsulated, with or without extension into mediastinal fat |
| b: Extension into mediastinal pleura | |
| T2 | Pericardium |
| T3 | Lung, brachiocephalic vein, superior vena cava, chest wall, phrenic nerve, hilar (extra-pericardial) pulmonary vessels |
| T4 | Aorta, arch vessels, main pulmonary artery, myocardium, trachea, or oesophagus |
| N0 | No nodal involvement |
| N1 | Anterior (perithymic) nodes |
| N2 | Deep intrathoracic or cervical nodes |
| M0 | No metastatic pleural, pericardial, or distant sites |
| M1 | a: separate pleural or pericardial nodule (s) |
| b: pulmonary intraparenchymal nodule or distant organ metastasis |
IASLC, International Association for the Study of Lung Cancer; TNM, tumor-node-metastasis; T, tumour; N, node; M, metastases.