From the case:
Non-ossifying fibroma
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Non-ossifying fibroma of the distal tibia: well-defined outline of the tumor with sharply defined sclerotic margins.
Case Discussion
Non-ossifying fibroma is one of the benign bone lesions, which are often asymptomatic unless accompanied by a pathologic fracture.
Differential diagnosis
- fibrous dysplasia
- hyperparathyroidism -Brown tumor
- Brodie's and tuberculous abscesses
- chondroma
- benign osteoblastoma
- aneurysmal bone cyst
- chondroblastoma
- chondromyxoid fibroma.
Non-ossifying fibromas (NOF) are the most common of benign fibrous bone lesions 2 and is essentially a larger version ( >2-3 cm) of a fibrous cortical defect, both are encompassed by the term fibroxanthoma or metaphyseal cortical defect.
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