Figure 3

Low (a) and high power (b) pictures of the sarcoma. Highly pleomorphic cellular tumor is seen with areas of osteoid (indicated by arrow) and chondroid (indicated by asterix) formations. Non-neoplastic surface epithelium overlying the tumor is apparent in part (a). Osteoclast-type multinucleated giant cells are seen scattered among malignant cells, seen in part (b). (a: H-E × 40; b: H-E × 200).