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骨肉瘤恶性度极高，近年来国内外学者均倡导有效的术前化疗，并根据手术后肿瘤组织坏死情况，评估化疗效果而制定术后化疗方案。1 材料与方法1．1 一般资料2000年3月～2000年9月我科收治骨肉瘤患者9例，均经病理证实。外科分期Ⅱb期：男6例，女3例。年龄10～20岁，平均14岁。肿
Osteosarcoma has a high degree of malignancy. In recent years, domestic and foreign scholars have advocated effective preoperative chemotherapy, and according to the necrosis of the tumor tissue after surgery, evaluate the effect of chemotherapy and develop postoperative chemotherapy. 1 Materials and methods 1.1 General information In March 2000 to September 2000, 9 cases of osteosarcoma patients were treated in our department, all confirmed by pathology. Surgical stage IIb: 6 males and 3 females. Age 10 to 20 years old, an average of 14 years old. swollen