The 7th lung cancer TNM classification and staging system: Review of the changes and implications

Figure 6 Example of change in classification status. A: A mass in the right upper lobe and a satellite nodule (arrow) in the right middle lobe. This tumour is reclassified from M1 to T4. Patient may be considered for treatment (e.g., pneumonectomy) and a better prognosis is to be expected; B: A tumour with a satellite nodule (arrowhead) both in right lower lobe; this was therefore downstaged from T4 to T3 in the new classification and surgical treatment was considered.