Malignant transformation of ectopic pancreatic cells in the duodenal wall

Figure 1 Contrast-enhanced CT of upper abdomen demonstrating a duodenal mass which narrowed the lumen (arrows).

Figure 2 Duodenum. Arrows indicate the EP adenocarcinoma into the duodenal wall; the scalpel indicates the Ampulla of Vater.

Figure 3 Histological findings. A: Duodenal wall (a) and ectopic pancreatic tissue (b) (HE, × 25); B: Adenocarcinoma arising from ectopic pancreatic tissue (c) and ectopic pancreatic tissue (d) (HE, × 200).