Staging of bone sarcomas is the process whereby patients are evaluated with regard to histology, as well as the local and distant extent, of disease. Bone sarcomas are staged based on grade, size, and the presence and location of metastases. The system is designed to help stratify patients according to known risk factors. Proper staging helps define the prognosis for patients and helps guide their treatment. Furthermore, staging allows meaningful comparisons to be done among groups of patients.

中文翻译：

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骨原发性恶性肿瘤的分期

骨肉瘤的分期是评估患者组织学以及局部和远处疾病范围的过程。骨肉瘤根据分级、大小以及转移的存在和位置进行分期。该系统旨在帮助根据已知的风险因素对患者进行分层。正确的分期有助于确定患者的预后并有助于指导他们的治疗。此外，分期允许在患者组之间进行有意义的比较。