Parietal bone osteoid osteoma: A rare cause of button sequestrum sign in pediatrics. Case report and review of literature.

The current study evaluates a rare case of parietal bone osteoid osteoma in pediatrics and review the differential diagnosis of button sequestrum sign in the literature. A 12-year-old girl expressed localized pain in the right parietal bone. MRI represented enhancing nodule with button sequestrum sign appearance.