NCCN Guidelines for Patients® | Lung Cancer - Non-Small Cell Lung Cancer

23 NCCN Guidelines for Patients ® : Lung Cancer – Non-Small Cell, 2018 † † T2 tumors: a) are larger than 3 cm but not larger than 5 cm; b) have grown into the main bronchus; c) have grown into the lung’s inner lining (visceral pleura); or d) have caused lung collapse (atelectasis) or swelling (pneumonitis). • T2a tumors are 4 cm or smaller. Other features may or may not be present (ie, b–d). Smaller tumors with other features are also rated T2a. • T2b tumors are larger than 4 cm. Other features may or may not be present (ie, b–d). † † T3 tumors: a) are larger than 5 cm but not larger than 7 cm; b) have grown into the lung’s outer lining (parietal pleura) or nearby sites including chest wall, phrenic nerve, or the heart’s lining (pericardium); or c) there are primary and secondary tumors in the same lobe. † † T4 tumors a) are larger than 7 cm; b) have grown into the diaphragm, mediastinum, heart or its major blood vessels, windpipe (trachea), recurrent laryngeal nerve, carina, esophagus, or spine; or c) there are secondary tumors in the same lung but a different lobe than the primary tumor. 3 Cancer staging TNM scores Figure 6 Areas to which lung tumors grow Lung tumors may grow beyond the lobe in which it started to other parts of the lung and nearby organs. Illustration Copyright © 2017 Nucleus Medical Media, All rights reserved. www.nucleusinc.com

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