In this study we reviewed cases of osteosarcoma, malignant lymphoma of bone and Ewing's sarcoma. Historically, osteosarcoma was unresponsive to chemotherapy. Most patients were treated by radiation or amputation alone and 80% of them died from pulmonary metastasis within 2 years. Five-year survival rate was 13%. Introduction of ADM, HD-MTX and CDDP improved dramatically the prognosis of these cases. Five-year survival rate was 60%. On the other hand, 11 cases of malignant lymphoma of bone and 4 cases of Ewing's sarcoma were treated by radiation with no local recurrence. VEPA or CHOP chemotherapy was used for the former with a five-year survival rate of 45%. For the latter, T-11 protocol (Rosen) was applied, and all patients survive with no metastasis. Other organ injuries circulatory disturbance, bone necrosis and growth-disturbance of bone in radiotherapy, myocardiopathy caused by ADM and renal toxicity of CDDP are all problematic.
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