Imaging of gastroenteropancreatic neuroendocrine tumors

Figure 5 Axial magnetic resonance imaging images of a patient with Zollinger Ellison’s syndrome. A: Axial non-contrast T2 weighted image of a patient with known Zollinger Ellison’s syndrome secondary to a hyperfunctioning islet cell tumor (arrow) in the pancreatic tail. A T2 hyperintense nodule is present in the pancreatic tail. This corresponded to the site of increased tracer uptake on the octreotide scan (not shown). Note the relatively small size of the lesion, a finding that is typical for functioning islet cell tumors; B: Axial pre-contrast T1 weighted fat-suppressed image showing the lesion (arrow) to be hypointense. This contrasts well with the normal high signal of the pancreatic parenchyma; C: Axial post-contrast T1 weighted fat-suppressed image in the hepatic arterial phase showing avid enhancement within the lesion (arrow). This is the typical enhancement pattern of a neuroendocrine tumor.