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会计学Theretrocruralspace(RCS)isasmalltriangularregionwithinthemostinferiorposteriormediastinumborderedbythetwodiaphragmaticcrura.MultiplanarimagingmodalitiesallowevaluationoftheRCSaspartofroutineexaminations.Normalstructureswithintheretrocruralregionincludetheaorta,nerves,theazygosandhemiazygosveins,thecisternachyliwiththethoracicduct,fat,andlymphnodes./AnatomicConsiderations//CisternaChyli&ThoracicDuctParavertebralVenousPlexusCongenitaldiaphragmaticherniaBochdalekhernia(95%)Morgagni'shernia(2%)PartialduplicationofthediaphragmDiscontinuityofthediaphragmCongenitalAnomaliesoftheIVC//AbnormalitiesoftheCruraLymphadenopathyNeoplasmsForegutMalformationsVascularDisordersInfammatoryConditionsInfectionsOtherAbnormalitiesLymphadenopathy(6mm)Neoplasms///VascularDisordersInfammatoryConditionsInfectionsConclusions感谢您的观看(guānkàn)。