骨血管内皮肉瘤是少见的恶性肿瘤 ,易发生于长骨干骺端。笔者遇 1例 ,经Ｘ线、ＣＴ及病理证实 ,报告如下。患者　男 ,6 9岁。右大腿间歇性疼痛 1年 ,加重 2个月就诊。右大腿外形及软组织无明显变化 ,跛行 ,自服止痛药无效 ,门诊以右股骨骨肿瘤收入院。查体 :除局部轻度压痛外 , Osteosarcoma endothelium sarcoma is a rare malignant tumor, easy to occur in the long bone metaphysis. I met a case, by X-ray, CT and pathology confirmed, the report is as follows. Patient male, 6 9 years old. Intermittent right thigh pain for 1 year, increased 2 months treatment. Right thigh shape and soft tissue no significant change, lameness, self-service painkillers invalid outpatient to the right femoral bone tumor hospital. Physical examination: In addition to local mild tenderness,