肠道血管畸形的多层螺旋CT血管成像诊断

Diagnostic Performance of Multi-Slice CT Angiography in Intestinal Vascular Malformation

目的探讨肠道血管畸形的多层螺旋CT血管成像(MSCTA)的表现。方法回顾性分析7例经手术证实的肠道血管畸形患者的CT表现。7例均行腹部平扫、动脉期、门静脉期和延迟期扫描,扫描范围从膈顶至耻骨联合。结果所有患者MSCTA像上均表现为局部血管丛增多、增粗、紊乱,粗细不等,其中2例增粗的血管局部呈"瘤"样改变,同时可见增粗的供血动脉及早显的引流静脉,1例见对比剂向肠腔内溢出,1例合并肠壁外血管畸形。结论肠道血管畸形的MSCTA诊断明确,具有简便、安全、无创、准确的特点,同时能发现肠壁及其他伴发病变,是肠道血管畸形有效的首选诊断方法。

Objective To analyze the imaging features of multi slice CT angiography（MSCTA） in intestinal vascular malformation and to improve the diagnosis.Methods The MSCTA findings of 7 patients with intestinal vascular malformation confirmed by surgery were retrospectively reviewed.The patients underwent abdominal plain CT scan and dynamic contrast enhanced CT scan（arterial phase,portal phase and delayed phase）,with the range from diaphragm to pubic symphysis.Results MSCTA images of all the cases displayed partial vascular plexus increased,dilated,abnormal and uneven thickened.Two cases showed tumor like vascular dilation,accompanied by expanded artery and earlier draining veins.One case showed extravasation of contrast material into the lumen.One case associated with an arteriovenous malformation outside the intestinal wall.Conclusion MSCTA can be used as a first choice method for evaluating intestinal vascular malformation because of definition,safety,noninvasive and accuracy.As wellas,it can detect lesions of intestinal walls and other simultaneous lesions.