Objective To explore the computed tomography (CT) findings and its differential diagnosis in acute primary epiploic appendagitis (APEA). Methods The clinical records and CT images of 7 patients with APEA performed at Chengdu Western Hospital between Dec. 2011 and Jul. 2016 were reviewed retrospectively. The diagnosis of 3 cases were confirmed by pathological examination after operation. Results Three of seven cases were located at the side of the ascending colon, and the rest (4 cases) located near the sigmoid colon. In all of 7 cases, CT scans demon-strated oval fat-density nodules adjacent to the colon with thin circular rim and slightly high density shadow. The pres-ence of funicular or patchy exudation with surrounding fat stranding appeared in 5 cases. And in 7 cases, the center of the lesion showed punctate or linear slightly high density shadow; ring-enhancing lesions appeared after contrast admin-istration. 4 cases showed thickening of adjacent peritoneum, and 3 cases appeared as focal colonic wall edema and thick-ening. Conclusion Acute primary epiploic appendagitis has characteristic CT feactures. Recognizing lesions in APEA CT signs can avoid unnecessary surgical treatment.%目的 探讨急性原发性肠脂垂炎的CT诊断及鉴别诊断.方法 回顾性分析成都市西区医院2011年12月至2016年7月收治的7例急性原发性肠脂垂炎的临床及CT资料,其中3例经手术及病理证实.结果 7例患者中3例位于升结肠旁,4例位于乙状结肠旁.7例CT平扫表现为结肠旁卵圆形脂肪密度结节影,边缘呈薄层环状稍高密度影,5例周围脂肪间隙内显示条索状或斑片状渗出影,7例患者病灶中心均可见点状或线状稍高密度影;增强后病灶呈环状强化;邻近腹膜增厚4例,局部结肠壁水肿、增厚3例.结论 急性原发性肠脂垂炎具有特征性CT表现,正确诊断可以避免不必要的外科手术治疗.
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