Fibroblastic Osteosarcoma
![No Image](/images/noimage.gif)
![Bone_Osteosarcoma60_Fibroblastic.jpg](/slides-13/slides/Bone_Osteosarcoma60_Fibroblastic.jpg)
Comments:
Approximately 25% of osteosarcomas consist predominantly of spindle tumor cells and can be classified as fibroblastic osteosarcoma. Osteoid production is minimal and seen focally; although in this case, osteoid matrix was readily found. Fibroblastic osteosarcomas are highly vascular and may resemble hemangiopericytoma.