Table 85-2 Tumor, Node, Metastasis International Staging System for Lung Cancer 5-Year Survival Rate, % Stage TNM Descriptors Stage Clinical SurgicalPathologic Stage IA T1 N0 M0 61 67 IB T2 N0 M0 38 57 IIA T1 N1 M0 34 55 IIB T2 N1 M0 24 39 IIB T3 N0 M0 22 38 IIIA T3 N1 M0 9 25 T1–2–3 M0 N2 13 23 IIIB M0 T4 N0–1–2 7 | Chapter 085. Neoplasms of the Lung Part 7 Table 85-2 Tumor Node Metastasis International Staging System for Lung Cancer 5-Year Survival Rate Stage TNM Descriptors Clinical Stage Surgical- Pathologic Stage IA T1 N0 M0 61 67 IB T2 N0 M0 38 57 IIA T1 N1 M0 34 55 IIB T2 N1 M0 24 39 IIB T3 NO MO 22 38 IIIA T3 N1 MO 9 25 T1-2-3 N2 MO 13 23 IIIB T4 NO-1-2 MO 7 5 T1-2-3-4 N3 MO 3 3 IV Any T any N M1 1 1 Tumor T Status Descriptor TO No evidence of a primary tumor TX 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 TIS Carcinoma in situ T1 Tumor 3 cm in greatest dimension surrounded by lung or visceral pleura without bronchoscopic evidence of invasion more proximal than lobar bronchus . not in main bronchus T2 Tumor with any of following 3 cm in greatest dimension involves main bronchus 2 cm distal to the carina invades visceral pleura associated with atelectasis or obstructive pneumonitis extending to hilum but does not involve entire lung T3 Tumor of any size that directly invades any of the following chest wall including superior sulcus tumors diaphragm mediastinal pleura parietal pericardium or tumor in main bronchus 2 cm distal to carina but without involvement of carina or associated atelectasis or obstructive pneumonitis of entire .
