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FIGURE 16-3. Anteroposterior radiograph of a 62-year-old patient's distal femur. The patient had pain for 4 weeks before sustaining a nondisplaced fracture through a lesion in her distal lateral femur. Its appearance on the plain radiograph is suggestive of a metastatic lesion. No other lesions were found and a biopsy was done. The lesion proved to be a primary malignant fibrohistiocytoma of bone. She had a limb salvage resection after preoperative chemotherapy.
FIGURE 16-3. Anteroposterior radiograph of a 62-year-old patient's distal femur. The patient had pain for 4 weeks before sustaining a nond...
Figure 58.1. A destructive bone-forming lesion of the distal femoral metaphysis. Notice the destruction of the medial femoral condyle, the new bone formation in the region of bone destruction, and the elevation of the periosteum. These features are characteristic of osteosarcomas.
Figure 58.1. A destructive bone-forming lesion of the distal femoral metaphysis. Notice the destruction of the medial femoral condyle, the...
Osteosarcoma. (A) The distal femur contains a dense osteoblastic malignant tumor that extends through the cortex into the soft tissue and the epiphysis. (B) A photomicrograph reveals pleomorphic malignant cells, tumor giant cells, and mitoses. The tumor produces woven bone that is focally calcified.
Osteosarcoma. (A) The distal femur contains a dense osteoblastic malignant tumor that extends through the cortex into the soft tissue and t...
Ewing sarcoma. The tumor shows small, round cells, with glycogen-filled clear cytoplasm.