Title: MRI in the diagnosis of intracranial hemangiopericytoma
Abstract: Objective:To investigate the MRI characteristics of intracranial hemangiopericytoma(HPC)with different grading,in order to improve the knowledge of HPC and the diagnostic accuracy before surgery.Methods:The MRI features of 9HPC patients with different grading confirmed by operation and pathology were analyzed retrospectively.Results:Among the 9cases,8cases had intracraniao-extracerebral lesion and one patient had the mass located within lateral ventricle.5cases were graded as WHO ⅡHPC,which were oval in shape with clear margin,with neither significant peritumoral edema nor adjacent skull destruction.2of them had narrow base connected with meninges,and 2cases showed dural tail sign.4cases were graded as WHO Ⅲ anaplastic HPC,which were lobulated in shape with blurred margin,significant peritumoral edema,cystic degeneration and necrosis.All of the 4cases had narrow base connected with meninges.Adjacent skull destruction was found in 2cases.The parenchyma of the tumors showed isointensity or hypointensity on T1 WI,isointensity or hyperintensity on T2 WI and hyperintensity on DWI.While the cystic degeneration and necrosis within the tumors showed hypointensity on T1 WI,hyperintensity on T2 WI,hypointensity on DWI,and heterogeneous enhancement.Vascular flow void could be found within or around the tumor in 7cases.Conclusion:Preoperative MRI is beneficial for clinical diagnosis,treatment and prognosis of intracranial HPC.
Publication Year: 2015
Publication Date: 2015-01-01
Language: en
Type: article
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