Relapsed primary extraskeletal osteosarcoma of liver: A case report and review of literature

Figure 2 Pathology of hepatic osteosarcoma. A: Macroscopic view: A cystic-solid mass was observed in the section of the liver next to the liver capsule. The cystic fluid was already lost, and the grayish-red and grayish-yellow solid area of the tumor was soft with a cut-fish-like surface; B: Pathological microscopy: The short spindle-shaped tumor cells had medium density, an increased nucleus-to-plasma ratio, atypical nuclei, and pathological mitosis. Some tumor cells were converted to osteoblasts. There was osteoid matrix between tumor cells and osteoclast-like giant cells; C: Immunohistochemistry: SATB2 was partially weakly positive.