目的 探讨多层螺旋CT诊断原发 性肠脂垂炎的特征表现，提高对该病的认 识。方法 搜集我院2012至2016年间由CT 提示并之后随访诊断为肠脂垂炎的24例患 者临床及影像学资料，分析病变与结肠的 位置关系、病变的大小、脂肪中心是否有 高密度存在、邻近肠壁改变等征象。并对 5例复诊患者的CT与第一次CT进行比较。 结果 肠脂垂炎最常见的发病部位为乙状 结肠周围，最常见的位置为结肠前方；各 病灶均表现为邻近肠壁的类圆形脂肪密度 病灶，边缘有完整或不完整环形软组织密 度，13例病变内部可见点状或小片状软组 织密度影；24例病灶周围均可见模糊渗 出，21病变邻近腹膜可见不同程度增厚； 仅2例病灶局部肠壁增厚。在5例随访患者 的CT图像上观察到病变大小、内部密度变 化及内部高密度征的大小都随时间发生改 变。结论 肠脂垂炎具有一定的临床和影 像学特征，CT能够发现病变，确定病变部 位、范围及周围肠管表现，对临床诊断及 治疗有指导意义

Objective To investigate the characteristics of MSCT in the diagnosis of primary epiploic appendagitis(PEA), and to improve the understanding of the disease. Methods Clinical and radiographic data of 24 patients with CT from 2012 to 2016 were collected. The CT scans of the PEA were evaluated for location in relationship to the colon, size, a focal fatty center, the presence of colon wall thickening。And 5 patients with followup CT comparing with CT for the first time. Results The most common part of colon involved by PEA was the sigmoid colon, and the most common position was anterior to the colonic lumen. All lesions were round like fatty mass abutting the colon, the edge has a complete or incomplete annular soft tissue density, 13 cases of internal visible dot or small pieces of high density. 21 lesions adjacent visible peritoneal thickening of different level, colon wall thickening was present in only 2 cases. The lesion size, internal density and size of the internal high density sign were observed to change over time in the CT images of 5 patients with follow-up. Conclusion PEA has a certain clinical and imaging features. The most common finding on CT is a fat-density oval lesion with surrounding inflammation on the anterior aspect of the sigmoid colon. Review of CT lesions with time changes.