Fig. 13

A female patient 70 years old diagnosed to have NSCLC received chemotherapy and radiotherapy. Baseline study (A and B) showed the mass lesion = 90 × 62 mm in average with SUV uptake = 9.5. On follow-up after 3 months (Af and Bf) showed almost no change in the size of the mass by CT = 92 × 63 mm in average interpreted as stable disease by RECIST criteria while in PET/CT, the SUV increased to be 14.8 instead of 2.9 leading to change in opinion to be progressive disease response by PERCIST criteria instead of stable disease by RECIST criteria