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Review Question - QID 6082

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QID 6082 (Type "6082" in App Search)
A 15-year-old boy has a mass at the knee. Radiographs show an aggressive tumor involving the proximal tibia, and biopsy findings reveal a high-grade osteosarcoma. Staging studies show that the tumor impinges on the neurovascular bundle. The tumor enlarges during preoperative chemotherapy. Management should now consist of

prolonged chemotherapy.

0%

0/113

radiation therapy.

2%

2/113

amputation.

78%

88/113

marginal excision, sparing the neurovascular bundle.

5%

6/113

wide excision, including the neurovascular bundle.

14%

16/113

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Limb salvage procedures have become the usual treatment for even high-grade osteosarcomas. However, tumors associated with pathologic fracture, tumors encasing the neurovascular bundle, and tumors that enlarged during preoperative therapy and are adjacent to the neurovascular bundle require amputation.

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