Fig. 2

Characteristics of lesions on ¹⁸F-FDG-PET/CT. TP, true-positive, G2, G3, lymph node metastasis (LN+) or distant metastasis (M+); FP, false-positive, G1, no lymph node metastases (LN-) or no distant metastases (M-); TN, true-negative, : G1, LN- or M- ; FN, false negative, G2, G3, LN+ or M+. ^†MEN1 patient underwent total pancreatectomy: on histopathological report total of 13 tumors was detected: (8 = G1, 5 = G2); 1 was ¹⁸F-FDG-positive (1 TP), and other 12 ¹⁸F-FDG-negative (8 TN and 4 FN). ^‡Diagnosis was made by biopsy, stage unknown. ^§Unknown LN status due to enucleation