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Saturday, October 1, 2011

New TNM staging for lung cancer

New 7th edition of TNM classification lung cancer is based on International Association for the Study of
Lung Cancer (IASLC) database. The changes from previous edition are mentioned bellow. for more detail follow ERS journal (breathe ,June 2011)

The changes in relation to T (tumor) are-
1. T1a <2cm                                                                                                prev T1
2.T1b> 2-3cm                                                                                                     T1
3. T2a>3-5cm                                                                                                     T2
4.T2b >5-7 cm                                                                                                    T2
5. T3 >7cm                                                                                                          T2
6. Additional tumor node in same lobe T3                                                             T4
7. Add tumor node in another ipsilateral lobe T4                                                   M
8. Pleural inv M1a                                                                                                T4
9. Intra thoracic metastasis M1 and extrathoracic metastasis M2                           M

N remained unchanged , however nodal zone has been changed
Posted by Dr kripesh ranjan sarmah at 8:16 PM

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