-Osteoid-producing skeletal tumors are commonly encountered lesions by radiologists. Lesions include both benign tumors-osteoma, enostosis, osteoid osteoma, and osteoblastoma-as well as the malignant neoplasm, osteosarcoma. Radiologic features of these lesions are emphasized in this article and are frequently diagnostic. In addition, clinical characteristics, treatment, and prognosis are reviewed. KEYWORDCaret Bone - neoplasms - osteosarcoma - osteoma - osteoid osteoma - osteoblastoma