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目的探讨感染性主动脉瘤的CT表现。方法回顾性分析2009年6月至2016年1月期间本院9例感染性主动脉瘤患者(其中4例经外科手术确诊,5例经临床抗炎治疗后行支架置入术)的临床资料,总结感染性主动脉瘤的CT表现。结果 9例患者共10个动脉瘤,其中2个位于主动脉弓降部,8个均位于腹主动脉。动脉瘤处管壁均出现多发钙化,管腔呈瘤样扩张,腔内见不规则充盈缺损;管壁明显增厚,血管周围见不规则软组织密度影包绕;增强扫描动脉期轻度强化,延迟扫描见不规则片絮状及环状强化。结论感染性主动脉瘤及其周围组织在CT增强扫描上表现为斑片状及环状强化,是区别于常见动脉瘤的典型表现,可作为确诊感染性主动脉瘤的首选影像检查方法。
Objective To investigate the CT findings of infectious aortic aneurysms. Methods The clinical data of 9 patients with infectious aortic aneurysm (4 patients diagnosed surgically and 5 patients treated with anti-inflammatory drug after stent implantation) from June 2009 to January 2016 were retrospectively analyzed. , Summarize the CT findings of infected aortic aneurysm. Results A total of 10 aneurysms were found in 9 patients. Two of them were located in the descending aorta and eight were located in the abdominal aorta. Aortic aneurysm at the wall were multiple calcification, tumor-like lumen was expanded, the cavity see irregular filling defect; wall was significantly thicker, vascular irregular soft tissue density around the shadow of the shadow; enhanced scanning arterial mild enhancement, Delayed scanning see irregular film flocculus and ring enhancement. Conclusion Infectious aortic aneurysm and its surrounding tissues showed patchy and annular enhancement on CT enhanced scan, which is a typical manifestation which is different from common aneurysms and can be used as the first choice of imaging examination for the diagnosis of infected aortic aneurysm.