Table 9. Reasons for disagreement between EORTC criteria and PERCIST (reader 1).

N° of patients	mR EORTC	mR PERCIST	Reason for disagreement
1	CMR	PMR	FDG uptake of the target lesion over PERCIST’s cut-off but visually not significant according to EORTC
1	CMR	SMD	Low baseline FDG uptake and lesion over PERCIST’s cut-off but visually not significant according to EORTC
4	PMR	SMD	Reduction in single-lesion SULpeak less than 30% and reduction in summed SUVmax over 25%,
1	SMD	PMR	Reduction in single-lesion SULpeak over 30% and reduction in summed SUVmax less than 25%,
1	SMD	PMD	Reduction in single-lesion SULpeak greater than reduction in summed SUVmax
1	PMD	SMD	Increase in single-lesion SULpeak less than 30% and increase in summed SUVmax over 25%,

EORTC = European Organization for Research and Treatment of Cancer; PERCIST = PET Response Criteria in solid Tumours; CMR = Complete metabolic response; PMR = Partial metabolic response; SMD = Stable metabolic disease; PMD = Progressive metabolic disease