正中弓状韧带压迫腹腔动脉多层螺旋CT表现  

Multi-slice Spiral CT Manifestations of Celiac Artery Compression of Median Arcuate Ligament

作　　者：李晚君[1] 徐海[2] 林秀蓬[1] 吴美仙[1] 沈家亮[1] 赖振辉[1] 

机构地区：[1]广州市中医医院放射科,广东广州510130 [2]中山大学附属第一医院放射科,广东广州510080

出　　处：《中国医学影像学杂志》2016年第1期40-42,共3页Chinese Journal of Medical Imaging

摘　　要：目的正中弓状韧带(MAL)压迫是引起腹腔动脉狭窄或闭塞最常见的原因,无症状的MAL压迫腹腔动脉所致狭窄常被漏诊。本文探讨MAL压迫腹腔动脉的多层螺旋CT表现,提高对本征象的认识。资料与方法 26例MAL压迫腹腔动脉患者,其中11例有临床症状,15例无临床症状,回顾性分析其多层螺旋CT征象。结果 26例MAL压迫腹腔动脉患者中,14例(53.8%)腹腔动脉自腹主动脉发出的位置位于L1椎体上1/3;腹腔动脉狭窄组与腹腔动脉无狭窄组间腹腔动脉位置比较,差异有统计学意义(P<0.05)。CT征象:26例腹腔动脉狭窄矢状位可见动脉前壁凹陷,典型者呈钩形;横断面21例可见腹腔动脉狭窄、12例带状影;狭窄后管腔轻度扩张20例;有侧支循环8例。结论多层螺旋CT能够显示腹腔动脉的位置和MAL压迫腹腔动脉所致狭窄的征象,为临床提供重要信息。Purpose Median arcuate ligament（MAL） compression is the most common reason for celiac artery stenosis or occlusion, celiac artery compression of asymptomatic MAL is often misdiagnosed. This study aims to evaluate the multi-slice spiral CT manifestations of the celiac artery compression of median arcuate ligament. Materials and Methods CT features of 26 patients with celiac artery compression of median arcuate ligament were retrospectively studied. Eleven cases were symptomatic and fifteen cases were asymptomatic. Results In 14 cases（53.8%）, the location of compression was at the level of superior 1/3 of the L1 vertebral body. There was statistic difference in location of the origin of compression between the celiac artery narrowing group and the nonnarrowing group（P〈0.05）. CT manifestations included： narrowing of the celiac artery were observed in 26 patients on sagittal reformatted images with hollow on the anterior wall; a characteristic hooked appearance was observed. Narrowed celiac artery on the transverse images was seen in 21 patients, and a soft-tissue band extending across the anterior aspect of artery in 12 of them. Poststenotic dilatation was revealed in 20 patients. Collateral circulation was seen in 8 patients. Conclusion Multi-slice spiral CT can be helpful in demonstrating the location of celiac artery compression of median arcuate ligament and tell the characteristic imaging features.

关 键 词：腹腔动脉 缩窄 病理性 正中弓状韧带 体层摄影术 螺旋计算机 

分 类 号：R543.5[医药卫生—心血管疾病] R445.3[医药卫生—内科学]