GAMUT D-81-S2
TYPES OF OSTEOSARCOMA


PRIMARY
1. Extraskeletal (eg, soft tissue ; renal)
2. Fibroblastic (fibrogenic)
3. Giant cell (osteoclast) rich
4. Gnathic (mandibular)
5. High-grade surface
6. Intracortical
7. Intramedullary, high-grade osteolytic     (central, conventional, or classical)
8. Intramedullary, low-grade   (sclerosing osteosarcoma)
9. Mesenchymal
10. Osteosarcomatosis   
11. Parosteal (juxtacortical) 
12. Periosteal 
13. Small-cell
14. Telangiectatic


SECONDARY, ARISING IN OR ASSOCIATION WITH
1. Bone following radiation therapy 
2. Bone infarct; osteonecrosis
3. Fibrous dysplasia
4. Fracture (healed)
5. Metallic implants
6. Osteoblastoma
7. Osteogenesis imperfecta
8. Osteomyelitis, chronic
9. Paget's disease  
10. Retinoblastoma (esp. familial bilateral type)
11. Rothmund-Thomson S.





References