Bone surface lesions

Bone surface lesions refer to all neoplastic or neoplastic-like lesions arising from the bone surface (cortex, periosteum, and parosteal fibrous tissues) and developing outside of the bone medullary canal.

Neoplastic

• fat-containing matrix

  • parosteal lipoma

  • parosteal osteoliposarcoma ²

• bone matrix

  • parosteal osteosarcoma

  • periosteal osteosarcoma

  • high-grade surface osteosarcoma

  • osteoid osteoma

  • osteoblastoma

• cartilaginous matrix

  • periosteal chondroma

  • periosteal chondrosarcoma

  • Nora lesion

Non-neoplastic

• melorheostosis

• myositis ossificans

• cortical desmoid