Recent study[25] has found that 68Ga-DOTATATE PET/CT provides better identification of insulinomas (9/10, 90%) in comparison with other imaging modalities, 8 of 9 tumors had Ki-67 of <2%, the diameter of insulinoma is about 0.7 to 2.5 cm, but sensitivity and accuracy of 68Ga-DOTATATE were not mentioned in benign and malignant insulinomas, may be too little concerned with the number of cases. This evidence concerns the gene MKI67 and pancreatic insulinoma.