Rare anaplastic sarcoma of the kidney: A case report

Figure 1 Image of sonography and computed tomography. A: Sonography; B: Computed tomography. Discordant features of the renal anaplastic sarcoma in the image studies of sonography and computed tomography.

Figure 2 Gross and microscopic findings of the anaplastic sarcoma of the kidney. A: The cut surface of the kidney showing multiloculated cysts with the solid component; B: The cystic spaces lined by low cuboidal epithelium (arrow) (H&E stain 200 ×); C: The solid areas displaying spindle cells admixed with large multinucleated cells (arrow) (H&E stain 200 ×); D: Cellular areas showing spindle cells with frequent mitosis (H&E stain 400 ×); E: The tumor displaying myxoid changes in focal areas (H&E stain 200 ×); F: CD56 Immunohistochemical stain showing diffuse positive membrane stain (200 ×); G: Tumor cells showing a positive nuclear pattern with anti-P53 (400 ×); H: Tumor cells showing focal positivity for desmin. Immunohistochemical stain (200 ×); I: Tumor cells showing focal positivity for WT-1, nuclear pattern. Immunohistochemical stain (400 ×).