Osteoblastoma

• An uncommon osteoid tissue-forming primary neoplasm of the bone.
• Usually benign.
• Rare bone tumour.
• Patients usually present with pain of several months' duration.
• Pain is usually not worse at night, and not relieved by salicylates (like aspirin and other related compounds).
• If lesion is superficial, the patient may have localized swelling and tenderness.
• Spinal lesions can cause painful scoliosis, although this is usually not that common with osteoblastomas.
• Lesions may mechanically interfere with the spinal cord or nerve roots, producing neurologic deficits.
• Treatment can involve either surgery or radiation therapy, but radiation therapy may produce postirradiation sarcoma.