MR Features of Atypical Meningioma / 实用放射学杂志

ABSTRACT

Objective To analyze the MR features of atypical meningiomas,so that to improve the diagnostic accuracy of this tumor pre-surgery.Methods There were 12 cases of atypical meningiomas proved by surgery and pathology.All of these patients underwent plain and contrast-enhanced MR examinations.Results Totally 12 cases,included 2 cases of multiple meningiomas,2 cases of lateral ventriclar meningiomas,2 cases of completely calcific meningiomas,3 cases of cystic meningiomas and 3 cases of malignant meningiomas.Conclusion The external cerebral signs of the tumors are the important basis for the localizing diagnosis of atypical meningiomas.Atypical MR signs of meningiomas are of complimentary value in qualitative diagnosis.