Table 1.
Malignant | Benign |
---|---|
Primary
• Chondrosarcoma • Osteosarcoma • Fibrosarcoma • Malignant fibrous histiocytoma • Plasmacytoma Secondary • Metastases (most common) • Multiple myeloma • Direct contiguous spread from adjacent malignancies-mediastinal masses, carcinoma lung, breast and thyroid |
• Osteochondroma • Osteoma • Hemangioma • Fibrous dysplasia • Langerhan’s cell histiocytosis |