Revisions to the Tumor, Node, Metastasis staging of lung cancer (8th edition): Rationale, radiologic findings and clinical implications

Figure 7 N descriptors. A: Primary tumor and N2: FDG-avid left upper lobe lung mass (arrowhead) invading the prevascular region of the mediastinum with adjacent FDG-avid level 6 lymph nodes suggesting nodal metastases (arrows); B: N1 and N2: Level 10L (white arrow), and 3A (blue arrow) enlarged lymph nodes with increased FDG avidity (N1 nodal metastases) and similar level 7 (yellow arrow) lymph nodes suggesting N2 nodal metastases; C: N3: FDG-avid left supraclavicular lymph node (arrow) suggesting N3 nodal metastases.