Clinical classification of symptomatic heterotopic pancreas of the stomach and duodenum: A case series and systematic literature review

Figure 1 Image demonstrating the gastric antrum with an intramural mass identified within the wall of the stomach.

Figure 2 Histopathologic images. A: Histologic appearance of heterotopic pancreas in the stomach; B: High power view of heterotopic pancreas demonstrating pancreatic acinar and ductal architecture.

Figure 3 Coronal (A), axial (B), and (C) sagittal images of the abdomen and pelvis following the administration of IV contrast demonstrates enhancing heterotopic pancreatic tissue within the wall of the stomach along the lesser curvature (white arrows). The heterotopic pancreatic tissue is intramural in location and demonstrates similar attenuation characteristics of the adjacent pancreatic tissue seen on the coronal and sagittal images (white arrowhead).

Figure 4 Computed tomography images. A: Axial image demonstrating heterotopic pancreatic tissue within the stomach (white arrow). B: Axial image demonstrating heterotopic pancreas (white arrow) with associated psudocyst (white arrowhead). C: Coronal reformatted image demonstrating heterotopic pancreas tissue (white arrow) with associated pseudocyst (arrowhead) causing gastric outlet obstruction.

Figure 5 Non-contrast axial T1 weighted (A), coronal T2 weighted (B), and coronal postcontrast T1 weighted (C) images show a lesion within the first portion of the duodenum (white arrow) demonstrating T1 pre-contrast hyperintense signal similar to that of the adjacent pancreas (white arrowhead). This tissue shows similar imaging characteristics of the adjacent pancreatic tissue on the T2 coronal and T1 coronal post contrast images.

Figure 6 Single spot image of the stomach on a barium fluoroscopic study demonstrates an intraluminal filling defect within the stomach with a central indentation (arrow) consistent with pancreatic heterotopia.