Sandbox: Bone DDx
- 20-30 yo males
- Gradual, dull, and achy pain
- Neurological deficit (cord compression)
- Scoliosis and torticollis
- Mainly located in the spine
- Expansile lytic lesions with a rim of reactive sclerosis
- Internal calcification
- Cortical destruction, surrounding sclerosis, and periostitis
- Secondary aneurysmal bone cyst
- Trabeculae of woven and osteoid bones
- Surrounded by a single layer of osteoblasts
- Multiple osteoclasts
- Loose fibrovascular stroma
- Intralesional hemorrhage