Introduction: Benign bone tumour arising from osteoblasts, Bony (ivory) hard in consistency, 1 or 2 cm in size, over a flat bone, usually frontal bone asymptomatic unless the deeper extension is pressing on the brain which is very unusual

Incidence: Not worked out in our country, not very common

Differential Diagnosis: None

Prevention: Nil

Treatment: Asymptomatic lesions left alone, Excision of symptomatic ones or for cosmetic reasons