Figure 5

Microphotograph of the tumor. Microphotograph (250×) of the specimen in H & E stains showing neoplastic stromal cells and multinucleated giant cells. The stromal cells (horizontal arrow) are round to spindle shaped with moderate amount of eosinophilic cytoplasm and a single nucleus. They are mesenchymal in origin. The multinucleated giant cells (vertical arrow) are large in size with eosinophilic cytoplasm and a large number of nuclei.