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Definitions Primary Tumor (T)

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 T0 No evidence of primary tumor Tis Carcinoma in situ T1 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 (for example, not in the main bronchus)1 T1a Tumor 2 cm or less in greatest dimension T1b Tumor more than 2 cm but 3 cm or less in greatest dimension T2 Tumor more than 3 cm but 7 cm or less or tumor with any of the following features (T2 tumors with these features are classified T2a if 5 cm or less): involves main bronchus, 2 cm or more distal to the carina; invades visceral pleura (PL1 or PL2); associated with atelectasis or obstructive pneumonitis that extends to the hilar region but does not involve the entire lung T2a Tumor more than 3 cm but 5 cm or less in greatest dimension T2b Tumor more than 5 cm but 7 cm or less in greatest dimension

T3 Tumor more than 7 cm or one that directly invades any of the following: parietal pleural (PL3), chest wall (including superior sulcus tumors), diaphragm, phrenic nerve, mediastinal pleura, parietal pericardium; or tumor in the main bronchus less than 2 cm distal to the carina1 but without involvement of the carina; or associated atelectasis or obstructive pneumonitis of the entire lung or separate tumor nodule(s) in the same lobe T4 Tumor of any size that invades any of the following: mediastinum, heart, great vessels, trachea, recurrent laryngeal nerve, esophagus, vertebral body, carina, separate tumor nodule(s) in a different ipsilateral lobe

A N AT O M I C S TAG E / P R O G N O S T I C G R O U P S

Occult Carcinoma Stage 0 Stage IA Stage IB Stage IIA

Stage IIB Stage IIIA

Distant Metastasis (M)

M0 No distant metastasis M1 Distant metastasis M1a Separate tumor nodule(s) in a contralateral lobe, tumor with pleural nodules or malignant pleural (or pericardial) effusion2 M1b Distant metastasis (in extrathoracic organs)

Stage IIIB

Stage IV

Notes

TX Tis T1a T1b T2a T2b T1a T1b T2a T2b T3 T1a T1b T2a T2b T3 T3 T4 T4 T1a T1b T2a T2b T3 T4 T4 Any T Any T

N0 N0 N0 N0 N0 N0 N1 N1 N1 N1 N0 N2 N2 N2 N2 N1 N2 N0 N1 N3 N3 N3 N3 N3 N2 N3 Any N Any N

M0 M0 M0 M0 M0 M0 M0 M0 M0 M0 M0 M0 M0 M0 M0 M0 M0 M0 M0 M0 M0 M0 M0 M0 M0 M0 M1a M1b

Financial support for AJCC 7th Edition Staging Posters provided by the American Cancer Society

Copyright 2009 American Joint Committee on Cancer



invasive component limited to the bronchial wall, which may extend proximally to the main bronchus, is also classified as T1a. 2 Most pleural (and pericardial) effusions with lung cancer are due to tumor. In a few patients, however, multiple cytopathologic examinations of pleural (pericardial) fluid are negative for tumor, and the fluid is nonbloody and is not an exudate. Where these elements and clinical judgment dictate that the effusion is not related to the tumor, the effusion should be excluded as a staging element and the patient should be classified as M0.

Printed with permission from the AJCC.

1 The uncommon superficial spreading tumor of any size with its

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Regional Lymph Nodes (N)

(© Memorial Sloan-Kettering Cancer Center, 2009.)

Financial support for AJCC 7th Edition Staging Posters provided by the American Cancer Society



The IASLC lymph node map shown with the proposed amalgamation of lymph into zones.

Copyright 2009 American Joint Committee on Cancer

ILLUSTRATION

Printed with permission from the AJCC.

NX Regional lymph nodes cannot be assessed N0 No regional lymph node metastases N1 Metastasis in ipsilateral peribronchial and/or ipsilateral hilar lymph nodes and intrapulmonary nodes, including involvement by direct extension N2 Metastasis in ipsilateral mediastinal and/or subcarinal lymph node(s) N3 Metastasis in contralateral mediastinal, contralateral hilar, ipsilateral or contralateral scalene, or supraclavicular lymph node(s)

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