Analysis the MR feature of 38 cases lateral ventricle tumor

LIU Yun; WANG Guanxian; GONG Mingfu

doi:10.3969/j.issn.1671-6450.2017.08.019

Abstract：Objective To analyze MRI features of the lateral ventricle tumors and improve their diagnosis accuracy.Methods Retrospectively analyze the MRI signs of 38 cases of lateral ventricle tumors confirmed pathologically in our hospital,including meningioma,central neurocytomas,ependymomas,subependymal giant cell astrocytoma,oligodendrogliomas,choroid plexus papilloma,glioblastoma and schwannoma.The main scan sequences were T1WI,T2WI,T2 Flair and Gd DTPA contrast enhanced scan.The location,shape,size,border,internal signal,degree of enhancement,adjacent brain tissue changes were observed.Results All kinds of lateral ventricle tumors had their own MRI feature.Both of meningioma(15 cases)and schwannoma(1 case)had homogeneous signal intensity and smooth edges.It was more common for central neurocytomas(6 cases)and ependymomas(5 cases)being in the lateral ventricle and cystic.Subependymal giant cell astrocytoma(3 cases)tends to locate near the foramen of monro and calcify.In contrast,astrocytoma(3 cases)and oligodendroglioma(2 cases)usually were in the lateral ventricle triangle.Glioblastoma(1 case)occurred in the lateral ventricle anterior horn and was of inhomogeneous signal and breezing border.Choroid plexus papilloma(2 cases)often located in the lateral ventricle triangular area and had dot mixed signal and their edge was granular and irregular.In enhanced MRI,meningioma,schwannoma and choroid plexus papilloma usually showed significant and homogeneous enhancement,while subependymal giant cell astrocytoma,astrocytoma,glioblastoma and oligodendroglioma were of heterogeneous enhancement,and central neurocytomas and ependymoma were of mild to moderate enhancement.Conclusion The diagnosis accuracy of lateral ventricle tumor can be improved based on the their MRI features,the location of tumors and the onset age.