Malignant myopericytoma originating from the colon: A case report

Figure 3 Imaging and immunohistochemical analysis before and after the second operation. A: Axial computed tomography view of the tumor prior to surgery; B: Coronal view of the tumor prior to surgery; C: Gross specimen of tumor tissue. The arrows show the mucosal layer of the colon; D: Axial view after surgery; E: Coronal view after surgery; F: Tumor cells in a concentric pattern around the blood vessels (magnification power: 100 ×); G: Abnormal mitotic figures in the tumor cells (magnification power: 200 ×); H: Hematoxylin and eosin staining revealed tumor giant cells (magnification power: 200 ×); I: Smooth muscle actin was diffusely expressed in tumor cells (magnification power: 100 ×).