Figure legends
Fig.1:Gastroscopic images.A:mucosal protuberous lesion in the greater curvature of the stomach. B:After resected by high-frequency electric coil.
Fig.2:Pathological pictures of the mass.A:The pathological picture of the mass was ectopic lamina propria, muscularis mucosa and proliferating duodenal glands(×2). B:The ectopic lamina propria of the duodenal mucosa(×4).
Fig.3:Immunohistochemical images.A:CD-X2 expression in intestinal epithelium; B,C,D:MUC2,MUC5,MUC6 were expressed in intrinsic glands of intestinal epithelium;E: AB staining, Goblet cells were blue stained; F: AB-PAS staining: goblet cells are blue and duodenal glands are purple.