Periosteal Osteosarcoma
Definition
Intermediate grade chondroblastic osteosarcoma arising from surface of long bones
Epidemiology
Extremely rare
- 1% of all osteosarcomas
- 25% of surface osteosarcomas
Age 15-25
Location
Typically anterior proximal tibia
- diaphysis of major long bones
- humerus
Pathology