Disorganized periosteal reaction
Disorganized or complex periosteal reaction has spicules with random orientation and appearance. It is often seen in highly aggressive processes.
Pathology
It has been associated with:
- osteosarcoma
- metastasis
- osteomyelitis
- chondrosarcoma
- Ewing sarcoma
- stress fracture
- malignant fibrous histiocytoma
- spindle cell sarcoma