左股骨上段恶性纤维组织细胞瘤１例１戚基萍１王立峰１关希丽２王玉琳患者，男性，２５岁。左髋部肿物，伴有疼痛２月余。查体：左髋部后外侧明显肿胀，有压痛，可触及肿块，质地较硬，活动度差。髋关节功能受限。Ｘ线显示：左侧股骨上段及粗隆呈局限性骨质破坏，密度低，... Left upper femoral malignant fibrous histiocytoma 1 case 1 Qi Jiping 1 Wang Lifeng Guan Xili 2 Wang Yulin, male, 25 years old. Left hip mass with pain more than 2 months. Physical examination: The posterior and left lateral parts of the left hip are swollen, with tenderness, palpable mass, hard texture, and poor activity. Hip function is limited. X-ray: the upper part of the left femur and the trochanter showed limited bone destruction, low density,...