Figure 4. Non-small cell lung cancer, 82 y.o., M patient, a1) Abnormal increased metabolic activity was observed in the mass identified in the left parahilar region and, a2) Intensity modulated radiation therapy planning images by these views, b) Increased metabolic activity compatible with residual mass was seen in positron emission tomography/computed tomography that was applied for treatment-control after four months, c) Plan images belonged to stereotactic body radiation therapy that was applied to the residual mass, d) Pathologic activity was not observed in positron emission tomography/computed tomography after one year (complete metabolic response).