Primary Bone Tumors
A 52-year-old man presents with 8 months of progressive hip pain. He has a known history of an "enchondroma" in his proximal femur diagnosed 10 years ago. Radiographs now show a lesion with areas of stippled and ring-and-arc calcification, endosteal scalloping greater than two-thirds of cortical thickness, and loss of previously defined margins. MRI shows a 9cm lesion with areas of increased signal. Biopsy reveals atypical cartilage with increased cellularity. Regarding chondrosarcoma:
Mark each as TRUE or FALSE
Chondrosarcoma is the second most common primary malignant bone tumor after osteosarcoma; it occurs ...
Radiographic features suggesting malignancy over benign enchondroma include size greater than 5cm, e...
Chondrosarcoma primarily affects children; it commonly arises in the diaphysis of long bones; chemot...
Histological grading (I, II, III) is the most important prognostic factor; Grade I (low-grade/atypic...
Wide surgical resection is the standard treatment for conventional chondrosarcoma; intralesional cur...
Answer the questions to see explanations
Click T (True) or F (False) for each option