本文报告了5例经手术及病理证实的成人肠套叠,着重探讨了成人肠套叠的CT表现特点,并对产生这些征象的病理基础作了解释.成人肠套叠的CT特点为分层靶块,靶块形状取决于其长轴与层面间的角度,当靶块长轴与层面垂直时表现为园形或类园形肿块,倾斜相交或平行时表现为肾形、香蕉状或弹簧状肿块.研究结果表明,CT诊断肠套叠是一种可靠的检查手段. This article reports 5 cases of adult intussusception confirmed by surgery and pathology, focusing on the CT features of adult intussusception, and explain the pathological basis for these signs.CT adult intussusception CT features stratification Target block, the shape of the target block depends on the angle between the long axis and the plane, when the long axis of the target block perpendicular to the plane when the performance of the park-like or park-like mass, tilted intersect or parallel when the performance of kidney-shaped, banana-shaped or spring The results show that CT diagnosis of intussusception is a reliable means of inspection.