尤文氏肉瘤曾被命名为骨的弥漫性内皮瘤，50岁以上原发于耻骨上枝者极为少见，现报告一例如下。患者吴某，女，54岁，因反复左髋、下肢疼痛伴左下肢活动障碍半年入院。查体见患者浅表淋巴结阴性、心肺正常、肝脾未扪及，在下腹耻骨联合上方可扪及一约3cm×3cm质硬固定包块，髋 Ewing’s sarcoma has been named diffuse bone neoplasm of bone, and it is extremely rare for people over the age of 50 to have a suprapubic branch. One case is reported as follows. The patient, Wu, female, 54 years old, admitted to hospital because of repeated left hip and lower extremity pain with activity disorder of the left lower extremity. Examination of patients with negative lymph node negative, normal heart and lung, liver and spleen and sputum, in the lower abdomen pubic symphysis can be associated with a about 3cm × 3cm hard fixed mass, hip