Typical Zollinger-Ellison syndrome-atypical location of gastrinoma and absence of hypergastrinemia: A case report and review of literature

Figure 2 Imaging findings. A: Contrast-enhanced computed tomography (CT) (arrow) showing enhancement of the posterior peritoneal para-aortic lymph node; B: 18F-AlF-NOTA-octreotide (18F-OC) positron emission tomography/CT (arrow) demonstrated that the lymph node of the posterior peritoneum was enlarged on the right side of the abdominal aorta, while an abnormally high uptake of 18F-OC suggested a high somatostatin expression, indicating neuroendocrine tumors.