Insulinoma is a tumor that belongs to the group of neuroendocrine tumors of the pancreas, although rare, is the most common among them.
The well-differentiated pancreatic neuroendocrine tumors usually present as hypervascular nodules in the arterial phase examinations (CT and MRI).
The appearances are highly suggestive for a NET of the pancreas, insulinoma is a presumptive diagnosis based on the clinical history.