恶性骨肿瘤属于较罕见的肿瘤,其中骨肉瘤还是最常见者。随着认识的不断增加,对几乎所有的骨肿瘤都进行了亚分类,然而将骨肉瘤分为中央性和近皮质骨肉瘤当今原则上仍然是有效的,但这只是一个较粗略的大分类。近皮质骨肉瘤又可分为骨旁骨肉瘤、退分化性骨旁骨肉瘤、骨膜骨肉瘤及高度恶 Malignant bone tumors are rare tumors, of which osteosarcoma is the most common. As knowledge increases, almost all bone tumors are sub-classified. However, the division of osteosarcoma into central and near-cortical osteosarcomas is still effective in principle today, but this is only a rough classification. Near-cortical osteosarcoma can be divided into para-osteal osteosarcoma, de-differentiated para-osteal osteosarcoma, periosteal osteosarcoma and highly vicious