Lucent epiphyseal bone lesion
This includes carpal and tarsal bones since they are epiphyseal equivalents.
- 1. Lesions related to joint pathology —e.g. geode, intraosseous ganglion, erosion, osteochondral defect, PVNS.
- 2. Giant cell tumour —nonsclerotic margin, extends from metaphysis to epiphysis. Mainly in adults.
- 3. Chondroblastoma —perilesional sclerosis ± chondroid calcification. Typically 10–20 years.
- 4. Infection —including Brodie’s abscess.
- 5. Location-specific lesions —e.g. intraosseous lipoma (calcaneus, central calcification), simple bone cyst (calcaneus, no central calcification), osteoblastoma (talus).
- 6. Clear cell chondrosarcoma —mimics chondroblastoma but usually occurs >20 years.
- 7. Bone lesions which can occur anywhere —e.g. metastasis, brown tumour, lymphoma, myeloma, haemophilic pseudotumour.