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骨肉瘤5年生存率不易提高的主要原因往往是在确诊和截肢时,肺部已有亚临床微小转移灶,Simm证实在胸片正常的骨肉瘤病人中,全肺断层摄片发现25％已经发生转移,而全肺断层阴性的病人,CT扫描检查
The main reason why the five-year survival rate of osteosarcoma is not easy to increase is that the lungs have subclinical micrometastases at the time of diagnosis and amputation. Simm confirmed that 25% of patients with whole lung tomography have been found in normal thoracic osteosarcoma patients. Metastasis, CT scan in patients with negative whole lung faults