Primary gastric dedifferentiated liposarcoma resected endoscopically: A case report

Figure 4 The histopathological diagnosis of the endoscopically resected lesion. A and B: The tumor had a smooth margin, an internal heterogeneous morphology, and was located in submucosa (H & E, original magnification × 10, × 40); the deep resection margin was positive for tumor; C: The neoplasm consists of infiltrated, atypical spindle-shaped tumor cells with nuclear hyperchromasia (H & E, original magnification × 100); D: Photomicrograph showing highly pleomorphic spindle cells with some rare lipoblasts (H&E, original magnification × 100); E and F: Immunohistochemical staining for tumor cells show diffuse positivity for MDM2 (E) and CDK4 (F).