原发性肠系膜肿瘤实属罕见，因其缺乏特征性临床表现，且女性患者多以下腹肿块就诊妇科，故极易误诊为卵巢肿瘤．现将我院1994～1996年误诊的5例原发性肠系膜肿瘤分析报告如下。至临床资料例1：13岁，因阵发性下腹痛3天，下腹发现肿块而入院。入院前3天无诱因出现下腹闷痛，月 Primary mesenteric neoplasms are rare because of their lack of characteristic clinical manifestations, and female patients have more abdominal tumors in the gynecological department. Therefore, they are easily misdiagnosed as ovarian tumors. The five primary mesenteric tumors misdiagnosed in our hospital from 1994 to 1996 are reported below. To the clinical data of the case 1:13 years old, due to paroxysmal lower abdominal pain for 3 days, found a mass in the lower abdomen and admitted to hospital. Three days before admission, there is no incentive to have abdominal pain, month