尽管骨肉瘤的发病率偏低 ,但其好发于青少年 ,恶性程度极高 ,有效化疗应用以前 ,即使采取较为彻底的截肢术 ,其治愈率也从未超过 2 0 % 〔1〕。由于骨肉瘤的组织学、生物学行为的一致性 ,好发于肢体 ,最常见的转移部位是肺 ,发现肿瘤复发及转移相对容易 ,况且此病患者大多年轻 Although the incidence of osteosarcoma is low, but it occurs in adolescents, a high degree of malignancy, effective chemotherapy before application, even if the more thorough amputation, the cure rate has never exceeded 20% [1]. Because the histological and biological behaviors of osteosarcoma are consistent and occur in the limbs, the most common site of metastasis is the lung, and it is found that tumor recurrence and metastasis are relatively easy. Moreover, the patients are mostly young.