Dedifferentiated liposarcoma of the small bowel mesentery presenting as a submucosal mass

Figure 1 A computed tomography scan demonstrating a fatty mass with a solid portion.

Figure 2 Gross picture showing one portion of a whitish, elastic-hard nodule located in the small bowel wall and the other portion of yellow, soft nodule located in the small bowel mesentery.

Figure 3 Histological examinations of different areas in the mass. A: Well-differentiated component showing atypical cells with nucleomegaly and hyperchromasia scattered within mature adipocytes (HE stain, × 400); B: The dedifferentiated component showing pleomorphic spindle cells arranged in a fascicular pattern (HE stain, × 200); C: The dedifferentiated component invading into the bowel wall (HE stain, × 40).