膈肌脚及膈脚后间隙(english)课件

The Diaphragmatic Crura and Retrocrural SpaceNormal Imaging Appearance,Variants,and Pathologic ConditionsGuo Xiaochao2010.7.22RadioGraphics 2008;28:1289-1305The Diaphragmatic Crura and Re1The retrocrural space(RCS)is a small triangular region within the most inferior posterior mediastinum bordered by the two diaphragmatic crura.Multiplanar imaging modalities allow evaluation of the RCS as part of routine examinations.Normal structures within the retrocrural region include the aorta,nerves,the azygos and hemiazygos veins,the cisterna chyli with the thoracic duct,fat,and lymph nodes.The retrocrural space(RCS)is2膈肌脚及膈脚后间隙(english)课件3Anatomic ConsiderationsDiaphragm and Diaphragmatic CruraLymph Nodes,Cisterna Chyli,and Thoracic Duct 52%at lymphangiography;1.7%at CT;15%96%at MRAortaAzygos and Hemiazygos VeinsParavertebral Venous Plexus valvelessSympathetic Trunk and Splanchnic NervesAnatomic ConsiderationsDiaphra4膈肌脚及膈脚后间隙(english)课件5膈肌脚及膈脚后间隙(english)课件6Cisterna Chyli&Thoracic DuctCisterna Chyli&Thoracic Duct7Paravertebral Venous PlexusParavertebral Venous Plexus8Congenital diaphragmatic hernia Bochdalek hernia(95%)Morgagnis hernia(2%)Partial duplication of the diaphragmDiscontinuity of the diaphragmCongenital Anomalies of the IVCAnatomic Variants and AnomaliesCongenital diaphragmatic herni9膈肌脚及膈脚后间隙(english)课件10膈肌脚及膈脚后间隙(english)课件11Abnormalities of the CruraAbnormalities of the Crura12Lymphadenopathy NeoplasmsForegut MalformationsVascular DisordersInfammatory ConditionsInfectionsOther AbnormalitiesAbnormalities of the RCSLymphadenopathy Abnormalities 13Lymphadenopathy (6mm)Lymphadenopathy (6mm)14NeoplasmsThese can be categorized according to their cell of origin into neurogenic,mesenchymal,germ cell,and lymphoid tumors.Neurogenic tumorsganglion cell tumorsnerve sheath tumorsparagangliaNeoplasmsThese can be categori15膈肌脚及膈脚后间隙(english)课件16膈肌脚及膈脚后间隙(english)课件17膈肌脚及膈脚后间隙(english)课件18Vascular DisordersVascular Disorders19Infammatory ConditionsRetroperitoneal fbrosisSteroid-induced retrocrural lipomatosisSpondylosis deformansPancreatic pseudocystsInfammatory ConditionsRetroper20膈肌脚及膈脚后间隙(english)课件21