现代骨肉瘤化疗的概念（续前）【新辅助化疗】肿瘤生长动力学实验发现，微小转移灶比大块的原发灶和较小的转移灶对化疗药物更敏感，为了避免等待手术和手术后的耽搁，更有效地消灭转移灶，控制原发灶配合手术。因此骨肉瘤的化疗亦由单纯的术后化疗改进为术前，术后的综合... Concept of Modern Osteosarcoma Chemotherapy (Continued) Neoadjuvant Chemotherapy The tumor growth kinetics study found that micrometastases are more sensitive to chemotherapeutic drugs than large primary tumors and smaller metastases, in order to avoid waiting for surgery and surgery. After the delay, more effective elimination of metastases, control of the primary tumor with surgery. Therefore, osteosarcoma chemotherapy is also improved from simple postoperative chemotherapy to preoperative and postoperative comprehensive...