CT血管成像检出内脏动脉瘤的分布及特征

Distribution and Features of Visceral Artery Aneurysms Detected in CT Angiography

目的:研究CT血管成像(CTA)检出的内脏动脉瘤的分布及特征。方法:在我院PACS以"动脉瘤"和"腹部增强CT"为检索式进行检索,时间为2013年1月至2015年9月,结合临床资料(包括DSA)确诊为内脏动脉瘤的病例。回顾性分析检出内脏动脉瘤的分布及CT表现。结果:77例患者有内脏动脉瘤,85支血管共发现动脉瘤95个,其中以脾动脉瘤(57%,54/95)、肾动脉瘤(27%,26/95)和肠系膜上动脉瘤(7%,7/95)最常见。单发动脉瘤(83%,64/77)、囊型动脉瘤(95%,90/95)常见,可伴有动脉瘤壁钙化(44%,42/95)和血栓形成(29%,28/95)。结论:脾动脉瘤为最常见的内脏动脉瘤,多表现为单发囊型瘤样扩张,可伴有壁钙化和血栓形成。CTA能敏感检出内脏动脉瘤,描绘其形态及内部特征。

Purpose： To investigate the distribution and features of visceral artery aneurysms （VAAs） detected in CT angiography. Methods： We searched the VAAs cases with the keywords of ＂aneurysms＂ and ＂contrast- enhanced abdominal CT＂ in PACS from Jan. 2013 to Sep. 2015. All VAAs were diagnosed with CTA and/or DSA. Their distribution and CT findings were retrospectively analyzed. Results： Ninety-five VAAs were found in 85 visceral arteries in 77 patients, in which splenic aneurysms （57%, 54/95）, renal aneurysms （27%, 26/95） and superior mesenteric aneurysms （7%, 7/95） were the most common VAA. Solitary （83%, 64/77） and saccular aneurysms （95%, 90/95） were the most common, which were associated with mural calcification （44%, 42/95） and thrombus formation （29%, 28/95）. Conclusion： Splenic aneurysm is the most common VAAs, the most findings of which are solitary and saccular dilation associated with mural calcification and thrombus formation. CT angiography can be used to detect VAAs and depict their morphology and internal features.