Duodenal mature teratoma causing partial intestinal obstruction: A first case report in an adult

Figure 2 Histopathological findings (hematoxylin-eosin staining, magnification ×100). A: Teratoma located between the inner circular and the outer longitudinal layers of the duodenal muscularis propria (arrow) and communicate with the normal duodenal mucosa (arrowhead); B: the tumor consists of stratified squamous cell epithelium, simple cuboidal epithelium, and irregular bundles of smooth muscle, fat and hyaline cartilage.