未分化多形性肉瘤(undifferentiated pleomorphic sarcoma,UPS)好发于四肢深部,其次为后腹膜区~([1-2]),肠系膜UPS在临床上则非常罕见。笔者医院近期收治1例,诊治效果良好。报告如下。1病历简介病人女性,61岁。因“左中腹疼痛1月余,加重1周”于2016-03-29入院。外院B超示:胆囊结石,胆囊炎、脾脏肿大。既往有子宫肌瘤行全子 Undifferentiated pleomorphic sarcoma (UPS) occurs in the deep limbs, followed by the retroperitoneal area ~ ([1-2]), mesentery UPS is clinically very rare. I hospital recently admitted in 1 case, diagnosis and treatment effect is good. The report is as follows. 1 medical records patient female, 61 years old. Because “left abdominal pain for more than a month, increased 1 week ” admitted on 2016-03-29. Outside the hospital B shows: gallstones, cholecystitis, splenomegaly. There are uterine fibroids line all the children