Figure 2
From: Post-radiation dedifferentiation of meningioma into osteosarcoma.
Hematoxylin and eosin stained sections of the tumor. a. Meningioma component (1) was distinctly and sharply demarcated by prominent osteoid trabeculae (2) from the adjacent high grade osteosarcoma (3). b. Meningioma with intact whirling pattern. c. Osteosarcoma was high grade with pleomorphic nuclei and high mitotic rate with foci of fine osteoid (4), (a, b and c- H&E stain, a- X4, b and c- X10).