摘要目的:探讨腹盆部孤立性纤维性肿瘤的(SFT)病因、诊断及治疗。方法:回顾性分析2015年7月至2019年7月北京大学国际医院腹膜后肿瘤外科收治的12例腹盆部SFT患者的临床资料。结果:12例SFT患者均行根治性手术切除，术后发生盆腔出血和输尿管瘘各1例，经保守治疗后好转。术后病理和免疫组化染色结果提示7例恶性SFT，5例良性SFT。术后随访2～53个月，随访率100%。复发5例，其中1例因肿物复发压迫致肠梗阻死亡。结论:SFT患者多无特异性临床表现，影像学和穿刺病理检查对术前诊断意义较大，根治性手术切除是改善患者预后的重要手段。

abstractsObjective:To investigate the pathogeny, diagnosis and treatment of solitary fibrous tumors of the abdomen and pelvis.Methods:Retrospective analysis was made on the clinical data of 12 SFT patients undergoing surgical resection in Peking University International Hospital from Jul 2015 to Jul 2019.Results:All patients underwent radical resection. After operation, complications in clued pelvic hemorrhage in 1 case and ureteral fistula in 1 case, all improved after conservative treatment.According to pathological and immunohistochemical results, 7 cases were MSFT and 5 cases were SFT. All patients were followed up for 2-53 months. 5 cases were recurrent, among which 1 case died of intestinal obstruction caused by tumor compression.Conclusion:The clinical manifestations of solitary fibrous tumors are mostly nonspecific.Imaging examination and puncture pathology are of great significance for preoperative diagnosis. Radical resection is an important means to improve the prognosis of patients.