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《Chinese Journal of Interventional Imaging and Therapy》 2009-01
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CT and MR findings of the dural mater and cranial vault lymphoma(6 cases report)

CAO Dai-rong,LI Yin-guan,YOU Rui-xiong,CAI Jian-zhong,ZHANG Jie-ping(Department of Image,the First Affiliated Hospital,Fujian Medical University,Fuzhou 350005,China)  
Objective To investigate radiological feature of the dural mater and cranial vault lymphoma.Methods CT and MRI data of the dural mater and cranial vault lymphoma proven by pathology were analyzed respectively in 6 cases.Results Of six cases,two involved left parietal bone and dura,one bilateral parietal bone and posterior part of the cerebral falx,one right occipital bone and tentorium and convexity with superior and inferior part of tentorium,as well as one right cranial vault and dural mater.CT showed an inhomogeneous enhanced mass of the cranial vault with both intra- and extra-calvarial extension in one case and iso- or hypo-density on non-contrast CT scan in three cases.The mass was iso- or hypointense on T1WI,iso-intense on the T2WI,homogeneously enhanced with Gd-DTPA in 4 cases and inhomogeneous enhanced in two cases.There were underlying parenchymal vasogenic edema on two cases.CT images with bone windows revealed very slight bone destruction of the cranial vault and almost intact skull shape in all 6 cases.Abnormal signal of the cranial vault was only showed on MRI.Four cases were misdiagnosed as meningioma pre-operation.Conclusion The radiological features of the malignant dura and cranial vault lymphoma are similar to that of meningioma.Minimum bony change might propose malignant lymphoma of the dura mater and the cranial vault.However,histopathologic examination is usually necessary for a definitive diagnosis.
【CateGory Index】: R739.4
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