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Malignant tumors of the jaw bones

1-Osteosarcoma. Is the most common malignant bone tumor, most commonly occurs in the long bones (femur, humerus) ,

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Malignant tumors of the jaw bones

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    1. Malignant tumors of the jaw bones

    2. 1-Osteosarcoma Is the most common malignant bone tumor, most commonly occurs in the long bones (femur, humerus) , & approximately 7% occur in the head & neck area. The predisposing factors or conditions include: Gene mutation, radiation therapy, & in older patients with a history of Pagets disease of bone

    3. Clinically 1- the peak incidence of the tumor in the long bone having a mean onset age of 24 Y., while in the jaw bones 33 Y of age 2- in the jaw bones are usually appear as bony-hard swelling of the buccal & lingual cortices, with or without pain, & often associated with separation of teeth. 3-in some patients occur as exophytic hard nodule on the attached gingiva, appearing as soft tissue epulides, but it is uncommon. X-ray: varies considerably Depending on histopathologic stage, the lesion may appear as radiolucency, or as radiopacity within a diffuse non-defined radiolucency Also show widening of the PdL in adjacent teeth. On occlusal radiograph the lesion reveals a sunburst pattern of radiopacity radiating from the periosteum.

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