孤立性肠系膜上动脉夹层不同假腔状态CTA特点及其临床意义

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[Abstract]Objective：Toexplore theCTAfeaturesoffalselumenmorphologyinpatientswithisolatedsuperiormesenteric arterydisection（ISMAD）anditsclinicalsignificance.Methods：Retrospectiveanalysiswasperformedontheclinicaland imagingdataof3Opatientswith ISMAD.Acording totheappearanceof thefalselumenonCTA，3Opatients weredivided intotheocclusiongroup（5cases）ulcer group（10cases）andvisualizationgroup（15cases）.CTA featuresandclinicaldata ofthethreegroups wereanalyzedandcompared.Results：There werestatisticallysignificant diferencesinthelengthof main dissection and the degree of true lumen stenosis among the three groups （ P =0.011，O.oo5）. The dissection length of the occlusion group was lower than that of the ulcer group and the visualization group（ P =0.003，0.016），and the true lumen stenosis degreeof thevisualizationgroupwassignificantlyhigher than that of theoccusiongroupandtheulcergroup（ P=0.004 ， 0.012）.Theproportionofbranchesinvolvedbyfalselumeninthevisualizedsegmentinthevisualizationgroup was significantly higher than that in the ulcer group（ P=0.049 ）.Conclusions：Patients with visualized false lumen ISMAD have thehighrrateofseverestenosis-oclusiontrue lumenandbranchinvolvementinthevisualizedsegments.Thesefindings suggest that relatively more proactive follow-up and management strategies can be taken clinically.

[Key words] Isolated superior mesenteric artery dissection;Tomography，X-ray computed

孤立性肠系膜上动脉夹层（isolatedsuperiormesentericarterydissection，ISMAD）临床较罕见，发病率仅 0.075%[1] ，至2013年病例总数不超过296例[2]。（剩余7748字）