Fig. 10
Ectopic pancreas. Abdominal CT of a patient who underwent the exam for an unrelated reason. A soft-tissue nodule, with a flat-ovoid shape and microlobulations, is seen in the serosa of the first portion of the duodenum. It has an enhancement pattern similar to that of the normal pancreatic tissue (arrowheads on a, b) in the late arterial (a) and portal venous phases (b). The lesion (arrow) is supplied by a branch of the gastroduodenal artery (arrowhead on c). This was heterotopic pancreatic tissue in the duodenal bulb serosa