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目的探讨肾梗死的临床特点与CT增强扫描表现特征。方法回顾性分析2009年10月至2014年7月临床证实的肾梗死患者8例的临床及影像学资料。使用飞利浦Brilliance 16排及64排螺旋CT机,均行腹部平扫加三期增强扫描。结果梗死位于左肾5例,右肾3例。CT平扫可见3例患侧肾脏肿大、边缘模糊,密度未见明确异常。CT增强扫描表现为患肾各期强化程度略低于对侧肾脏,均伴边缘较清晰、尖端指向肾门的三角形或楔形低密度影,其中三角形或楔形无强化区4例,低强化区4例;伴肾静脉及腔静脉血栓形成1例,CT增强扫描表现为静脉期增粗的肾静脉内可见低密度区;伴患肾周吉氏筋膜增厚3例。结论肾梗死临床表现无特征性。CT增强扫描显示RI直观准确,可作为基层医院诊断RI的首选方法。
Objective To investigate the clinical features of renal infarction and CT enhanced scan performance characteristics. Methods The clinical and imaging data of 8 patients with clinically confirmed renal infarction from October 2009 to July 2014 were retrospectively analyzed. Using the Philips Brilliance 16-row and 64-row spiral CT machines, both plain and triple enhanced scan were performed. Results The infarction was located in the left kidney in 5 cases and in the right kidney in 3 cases. 3 cases of CT scan shows ipsilateral kidney enlargement, fuzzy edge, no clear density abnormalities. CT enhanced scan showed a slightly lower degree of enhancement of the affected kidney than the contralateral kidney, with a clear edge, the tip of the triangle or wedge-shaped low-density shadow of the renal portal, including the triangle or wedge-shaped non-enhanced area in 4 cases, 4 cases of low-intensive area ; 1 case of renal vein and vena cava thrombosis, CT enhanced scan showed venous thickened renal vein can be seen in low-density area; with peri-renal Kyrgyz fascia thickening in 3 cases. Conclusion The clinical manifestations of renal infarction without characteristic. CT enhanced scan showed RI intuitive and accurate, can be used as the preferred method of RI diagnosis in primary hospitals.