If the fasting serum gastrin is more than10-fold normal (<100 pg/ml) and the gastric pH is < 2, a diagnosis of gastrinoma is established.[1] Ultrasonography, CT, MRI, somatostatin receptor scintigraphy, and endoscopic ultrasonography are useful and important modalities for localization diagnosis and ruling out metastases.[5,7,12,13]. Here, GAST is linked to gastrin-producing neuroendocrine tumor.