Table 9.

Trend of serum CgA values comparing baseline and end-treatment levels are tabulated on the basis of patients' functional response in the 23/59 cases in which discordant results between CgA trend and ⁶⁸Ga-peptide PET/CT results were observed.

Functional response	CgA values
	Increased	Stable$	Decreased
PR (9/23)	7∗	2	—
SD (10/23)	6∧	—	4§
PD (4/23)	—	4	—

^$Variation  ≤ 10%;  ^∗mean variation = 271 ± 220 (range 15–682); ^∧mean variation = 104 ± 119 (range 3–305); ^§mean variation = 669 ± 554 (range 41–1343).