Types of osteosarcomas
Osteosarcomas tumours can be classified as low-grade, intermediate-grade, or high-grade. In contrast to high-grade cancer, which spreads swiftly and metastasizes, low-grade cancer grows slowly and stays localised. (“Metastasize” refers to the process through which cancer spreads to other places of your body.)
The majority of osteosarcoma tumours diagnosed in children and adolescents are high-grade. Under a microscope, the cells of high-grade osteosarcoma do not resemble those of healthy bone. High-grade osteosarcomas come in nine different varieties:
- Osteoblastic
- Fibroblastic
- Chondroblastic
- Small cell
- Pagetoid
- Telangiectatic
- High-grade surface (juxtacortical high-grade)
- Extraskeletal
- Post-radiation
There is one type of immediate-grade osteosarcoma:
- Periosteal (juxtacortical immediate grade.
And, there are two types of low-grade osteosarcomas:
- Intramedullary or intraosseous well-differentiated (low-grade central)
- Parosteal (juxtacortial low grade)