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Figure legends: Figure 1) A: Endoscopy showing a neoformation with a short peduncle in the third duodenal portion. B: Saline solution with a drop of methylene blue is injected into the peduncle of the lesion. C: Neoformation is resected en bloc using a snare cautery. D: Endoscopy after one year from resection showing no residual tissue
Figure 2) Histopathological examination showing the mucosa of the small bowel partially replaced by gastric mucosa, with evident foci of foveolar epithelium and oxyntic glands, as expected in case of gastric heterotopia (Haematoxylin and eosin staining, a:100x; b: 200x and c: 400x)