Clinical manifestations】 【age of onset of relatively uniform distribution, not as good osteosarcoma with special age, but under 10 years of age, 50 years of age and above, less morbidity. An equal ratio of men and women. Tumor growth slower, and the pain does not show, very little systemic symptoms, serum alkaline phosphatase unchanged. Attending ordinary patients, have considerable shadow of the soft tissue tumors. Bone damage often confined to the side of the transparent defect was irregular. When tumor invasion marrow, bone destruction relatively extensive and widespread, a single cyst-like, but uneven edge cyst, without expansion of the phenomenon. This 2:00 and bone cyst different. To confirm the diagnosis, biopsy should be made. [Treatment and prognosis] tumors occurred in the location easy to cut governance, the concept itself tumor earlier, the bone destruction relatively limited, may consider the limitations of relatively complete tumor resection, if necessary, can make up for the bone defect implant Unit after attention to the long-term review. If the tumor recurrence, should be employed amputation, concurrent chemotherapy. Any invasion of a wide range of tumors, regardless of their degree of malignancy how, and shall be used for the treatment of osteosarcoma of the same methods. Lung metastases found in more. Primary fibrosarcoma poor prognosis, the five-year cure rate with osteosarcoma or similar chondrosarcoma. Secondary fibrosarcoma better prognosis, and of similar secondary cartilage.
