Primary Bone Tumors
A 14-year-old boy presents with 3 months of progressively worsening knee pain that is worse at night. He denies trauma. Examination reveals a firm, tender mass around the distal femur. Radiographs show a mixed lytic and blite lesion of the distal femoral metaphysis with periosteal reaction showing a "sunburst" pattern and Codman triangle. MRI demonstrates an intramedullary mass with cortical breach and soft tissue extension. Regarding osteosarcoma:
Mark each as TRUE or FALSE
Osteosarcoma is the most common primary malignant bone tumor in children and adolescents; it occurs ...
Radiographic features include aggressive periosteal reaction (sunburst pattern from tumor breaking t...
Chondrosarcoma is the most common primary bone malignancy in adolescents; osteosarcoma occurs most c...
Staging workup includes local MRI (entire bone to detect skip lesions, assess soft tissue extension ...
Treatment is multimodal with neoadjuvant chemotherapy, surgical resection with wide margins (limb-sa...
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Click T (True) or F (False) for each option