目的:分析闭孔疝的多层螺旋CT(MSCT)影像学特征。方法:回顾性分析扬州大学附属医院2009年7月至2019年5月由MSCT诊断为闭孔疝的患者26例临床资料及CT影像学特征，并结合多平面重建观察疝囊发生的具体位置、疝内容物及有无肠梗阻等。结果:26例患者中，双侧闭孔疝5例，右侧闭孔疝9例，左侧闭孔疝12例。疝内容物为小肠19例，肠系膜9例，膀胱5例。双侧小肠闭孔疝3例，右侧小肠闭孔疝7例，左侧小肠闭孔疝9例；MSCT影像表现为闭膜管入口处小肠管腔突然塌陷变窄，闭孔外肌与耻骨肌及短收肌之间、闭孔外肌上下束间以及闭孔内肌和耻骨上支闭孔沟之间见疝入的小肠管。继发性小肠梗阻15例，其中嵌顿性小肠梗阻9例，绞窄性小肠梗阻6例，表现为疝入的小肠腔积液15例，合并少许积气3例，小肠壁水肿14例，肠壁缺损2例；近段小肠扩张积液积气14例，小肠壁及肠系膜水肿12例。两侧肠系膜闭孔疝4例，右侧肠系膜闭孔疝2例，左侧肠系膜闭孔疝3例；MSCT表现为闭孔外肌与耻骨肌及短收肌之间见疝入的脂肪影。右侧膀胱闭孔疝2例，左侧膀胱闭孔疝3例，均为轻度；MSCT表现为闭膜管入口处见小囊状水样密度影。结论:MSCT多平面重建能够清晰直观地显示闭孔疝的影像学特征，对小肠缺血坏死及穿孔等具有较高的诊断价值。“,”Objective:To summarize the CT imaging features of obturator hernia.Methods:From July 2009 to May 2019, the clinical and CT imaging features of 26 cases with obturator hernia diagnosed by multi-slice spiral CT(MSCT) were retrospectively analyzed.The locations of hernia sac, contents of hernia and intestinal obstruction were observed by multi-planer reconstructions(MPR).Results:There were 5 cases of bilateral obturator hernia, 9 cases of right obturator hernia and 12 cases of left obturator hernia.The contents of hernia were small intestine in 19 cases, mesentery in 9 cases and bladder in 5 cases.There were 3 cases of bilateral small intestine obturator hernia, 7 cases of right and 9 cases of left small intestine obturator hernia, presented with abruptly collapse and narrowing of small intestinal cavity at the entrance of obturator canal.The small intestine was herniated between the external obturator muscle and the pubic muscle and adductor brevis, between the upper and lower bundles of external obturator muscle and the internal obturator muscle and superior pubic sulcus.There were 15 cases of small intestinal obstruction, including 9 cases of incarcerated small intestinal obstruction and 6 cases of strangulated small intestinal obstruction, of which 15 cases presented with small intestinal effusion, 3 cases with a little accumulation of gas, 14 cases with small intestinal wall edema and 2 cases with intestinal wall defect.The dilatation effusion and pneumatosis could be found in the proximal small intestine, of which 14 cases with gas-liquid level, 12 cases with small intestinal wall edema and mesenteric edema.There were 4 cases of bilateral mesenteric obturator hernia, 2 cases of right mesenteric obturator hernia and 3 cases of left mesenteric obturator hernia.There were 2 cases of right mild bladder obturator hernia and 3 cases of left mild bladder obturator hernia, presented with cystic water-like density at the entrance of obturator canal.Conclusion:MSCT reconstruction can intuitively display imaging features of obturator hernia, which has a rather high diagnostic value for small intestinal ischemic, necrosis and perforation.