Fig. 4
From: Insight into gastrointestinal heterotopic pancreas: imaging evaluation and differential diagnosis
A 15-year-old female presented with abdominal pain and distension underwent various imaging examinations. a Single spot image of the upper gastrointestinal tract on a barium fluoroscopic study demonstrated an intraluminal filling defect within the duodenum with a central indentation (white arrow) consistent with heterotopic pancreas. b Endoscopy showed a subepithelial lesion (white arrow) along the first portion of the duodenum with surrounding duodenitis. c–d Contrast-enhanced axial CT images revealed a hyper-enhanced lesion (white arrows) with ill-defined margin and thickening of the surrounding duodenal wall. e–h Non-contrast axial T2-weighted (e), pre-contrast T1-weighted (f), post-contrast arterial T1-weighted (g), and post-contrast venous T1-weighted images (h) showed a lesion within the first portion of the duodenum (white arrows) demonstrating T2-weighted slightly hyperintense signal, pre-contrast T1-weighted slightly hypointense signal, and post-contrast T1-weighted isointense like those of the normal pancreas