Osteosarcoma
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![Orthopedic_Osteosarcoma2_Resized.jpg](/slides-13/slides/Orthopedic_Osteosarcoma2_Resized.jpg)
Comments:
Osteosarcoma involving distal femoral metaphysis. The tumor is limited by the epiphyseal plate. The cortical bone is thinned by the tumor. The patient received pre-operative chemotherapy. About 55% viable tumor was found in the resected specimen. Image copyright: pathorama.ch; Used with permission.