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Lucent bone lesion containing calcium or bone
Most common
- 1. Enchondroma — chondroid matrix.
- 2. Osteoid osteoma and osteoblastoma —lucent nidus can contain calcification.
- 3. Avascular necrosis and bone infarction .
- 4. Metastases — some are mixed lytic and sclerotic.
Less common
- 5. Chondroblastoma —chondroid matrix. Epiphyseal location.
- 6. Chondrosarcoma —chondroid matrix. Usually metaphyseal.
- 7. Osteosarcoma —osteoid matrix. Usually metaphyseal.
- 8. Fibrous dysplasia —usually ground-glass density but can be sclerotic.
- 9. Osteomyelitis with sequestrum .
- 10. Eosinophilic granuloma —‘button sequestrum’.
- 11. Intraosseous lipoma —characteristic central focus of calcification, especially in calcaneus.
- 12. Haemangioma —contains coarsened trabeculae. Most common in spine.
- 13. Liposclerosing myxofibrous tumour —classically intertrochanteric region of femur.
- 14. Fibrosarcoma/undifferentiated pleomorphic sarcoma.
