Non-ossifying fibroma is the one of the benign bone lesions, which are often asymptomatic unless accompanied by a pathologic fracture.
hyperparathyroidisim -Brown tumor
Brodie's and tuberculous abscesses
aneurysmal bone cyst
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 .