关节液转移骨巨细胞瘤一例安徽省池州地区人民医院（２４７１００）张生，黄志兰患者，男性，３２岁。左膝肿痛半年余，１个月前外院Ｘ线摄片示股骨下端有Ｄ４ｃｍ×３ｃｍ椭圆形密度降低区，疑诊为良性肿瘤，未予治疗。半月前在受轻度外力后突然剧痛，不能行走，逐渐肿胀... Joint fluid metastasis of giant cell tumor of bone is an example of a patient in Chizhou District People’s Hospital of Anhui Province (247100). Zhang Sheng, Huang Zhilan, male, 32 years old. Left knee swelling and pain more than six months, 1 month ago, the X-ray photograph of the outer hospital showed a D4cm×3cm oval density reduction area at the lower end of the femur. The suspected benign tumor was not treated. Half an hour ago, after a sudden and severe external force, I could not walk and gradually became swollen...