原发性肠系膜肿瘤少见，１９８０～１９９７年３月我院收治３１例，术前确诊仅１０例（３２．２％）。现就临床特点及误诊原因分析如下。１临床资料１．１一般资料本组病例３１例，男２０例，女１１例，年龄最大７６岁，最小３月，病史最短１５天，最长１７５天。１．２临... Primary mesenteric tumors are rare. From March 1980 to March 1997, 31 cases were treated in our hospital. Only 10 cases (32.2%) were diagnosed before surgery. The clinical features and misdiagnosis causes are analyzed as follows. 1 Clinical data 1.1 General information 31 cases of this group of patients, 20 males and 11 females, the oldest 76 years old, the minimum 3 months, the shortest history of 15 days, the longest 175 days. 1.2 Pro...