<unk> s are present in about 30 % of children. The incidence of<unk>  is approximately 1000-2000 per 100,000 individuals worldwide. The age distribution of<unk>  is between 5-15 years. Men are more commonly affected than women, with a 1.9:1 ratio. In 1929, Phemister first described the term<unk> . The exact pathogenesis of<unk>  is not fully understood.<unk>  <unk>  typically occur in the metaphysis of the long bones. The bones often involved are femur, tibia, and fibula. The majority of patients with<unk>  are asymptomatic. Some patients with<unk>  have a complaints of pain, swelling and pathological fracture. X-ray is the diagnostic study of choice for the diagnosis of<unk>  demonstrating soap bubble like lytic lesion. Observation is the mainstay of treatment for<unk> . Surgery in form of curettage and bone grafting is reserved for cases with high risk of pathological fracture.
Nonossifying fibroma
Ossifying fibromyxoid tumour
Chondromyxoid fibroma
Liposclerosing myxofibrous tumor
Elastofibroma
Fibroma
Monostotic fibrous dysplasia
Pyogenic granuloma