Figure 18. Non-small cell lung carcinoma in a 78-year-old man with enlarged hilar and mediastinal lymph nodes. FDG PET-CT was performed for staging. Axial fused FDG PET-CT image shows an enlarged subcarinal node without abnormal metabolism (straight arrow), which was reactive. The metastatic left hilar node is FDG avid (wavy arrow), as was the primary tumor.