Quiz 28: Bone,Cartilage and Soft Tissue Sarcomas


True With less than 3000 reported cases each year,primary bone tumors compose less than 1% of all tumors.

True Osteosarcomas (35% of all primary bone tumors),chondrosarcomas (26%),fibrosarcomas (6%),and giant cell tumors of the bone (5%)are all resistant to radiation or have a low sensitivity to radiation.Only Ewing sarcoma (16%)and multiple myeloma are sufficiently radiosensitive to indicate radiotherapy as a portion of the standard of care.

False The most common presenting symptom of STS is a painless,gradually enlarging mass.

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