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Osteosarcoma, Variants: Multimedia
Updated: May 21, 2007
Multimedia
 | Media file 1: Frontal radiograph of the distal femur in a patient with telangiectatic osteosarcoma. The radiograph shows mixed medullary sclerosis and lucency, cortical destruction medially, aggressive periosteal changes, and a large soft-tissue mass with peripheral ossification. |
 | Media file 2: Coronal short-tau inversion recovery (STIR) magnetic resonance imaging (MRI) scan of the same patient as in Image 1. Note the abnormal signal intensity of the bone marrow in the metaphysis of the femur, the cortical destruction, and the prominent soft-tissue mass with the surrounding edema or reactive zone. |
 | Media file 3: Axial T2-weighted magnetic resonance imaging (MRI) scan of the same patient as in Images 1-2. A fluid-fluid level is present within the abnormal extraosseous tumor mass (arrow). The abnormal intramedullary tissue is less obvious in this sequence than in others. |
 | Media file 4: Lateral radiograph of the proximal tibia in a patient with parosteal osteosarcoma. Note the opaque, lobulated, amorphous or cloudlike mass of abnormal, ossified tumor, which is inseparable from the posterior aspect of the tibia. |
 | Media file 5: Axial computed tomography (CT) scan of the same patient as in Image 4. The ossified tumor mass is readily shown, and the thickened cortex is visible at the junction of tumor and normal bone (arrow). The medullary cavity of the tibia appears normal. |
 | Media file 6: Axial T1-weighted magnetic resonance imaging (MRI) scan of the same patient as in Images 4-5. The medullary cavity of the tibia shows predominantly normal signal intensity, except posteriorly, where the slightly reduced signal intensity raises the possibility of early tumoral invasion (arrow). This area was normal on histologic examination. |
 | Media file 7: Anteroposterior (AP) radiograph of the proximal tibia in a child with periosteal osteosarcoma. The metal pointer localizes the lesion for biopsy. |
 | Media file 8: Coronal short-tau inversion recovery (STIR) magnetic resonance imaging (MRI) scan of the same patient as in Image 7. The ossified component of the tumor shows low signal intensity (white arrow), but superficially, hyperintense material (black arrow) is present. This may be chondroblastic soft-tissue extension of tumor, adjacent reactive edema, or a combination of both. |
 | Media file 9: Frontal radiograph of the mandible in an adult with gnathic osteosarcoma. The radiograph shows a large, expansile lesion in the right ramus (arrow), with a mixed lytic and sclerotic appearance. |
 | Media file 10: Axial computed tomography (CT) scan obtained with bone window settings, in the same patient as in Image 9. Osseous expansion and the mixed lytic and sclerotic process are again appreciated. A large soft-tissue component (arrow) also is now visible. |
 | Media file 11: Axial computed tomography (CT) scan obtained with soft-tissue window settings, in the same patient as in Images 9-10. Extension of ossified matrix into the soft-tissue component of the tumor is shown (arrow). |
 | Media file 12: Anteroposterior (AP) radiograph of the proximal femur in a patient with Paget disease demonstrates the typical features of cortical thickening, osseous expansion, and trabecular coarsening. In addition, irregular bone lucency and cortical destruction are shown in the medial aspect of the shaft; this is consistent with secondary sarcoma formation. |
 | Media file 13: Localized isotopic bone scan in the same patient as in Image 12 shows a large area of reduced uptake in the medial side of the proximal femoral shaft at the site of the secondary sarcoma (arrow). |
 | Media file 14: Coronal T1-weighted magnetic resonance imaging (MRI) scan of the same patient as in Images 12-13. The tumor is shown in the proximal shaft of the right femur (white arrow), with cortical destruction and a large soft-tissue component (black arrow). |
More on Osteosarcoma, Variants |
| Overview: Osteosarcoma, Variants |
| Imaging: Osteosarcoma, Variants |
| Follow-up: Osteosarcoma, Variants |
 Multimedia: Osteosarcoma, Variants |
| References |
| « Previous Page |
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Further Reading
Keywords
primary malignant tumor of bone, bone tumor, bone malignancy
