Morphological spectrum of intracranial meningiomas on computed tomography (CT) and magnetic resonance imaging (MRI)
Journal Title: Panacea Journal of Medical Sciences - Year 2018, Vol 8, Issue 2
Abstract
Meningiomas are the most common extra axial and nonglial primary neoplasms of the central nervous system They account for nearly 15 of all intracranial neoplasms The present study was planned to identify and describe the morphological and imaging characteristics of both typical and atypical meningiomas on CT and MRI including Diffusion Weighted Imaging DWI and MR Spectroscopy MRS CT and MRI images of 43 patients histologically proven to have meningioma were retrospectively evaluated The images were evaluated for tumor location imaging characteristics atypical patterns of presentation and as well as advanced imaging features Statistical analysis used included percentage and frequency Institutional ethical committee clearance was obtained prior to commencement of the study Our study population comprised of 23 females and 20 males The bulk of our population belonged to 5th decade group 44 The most common tumor site was the frontal lobe 40 Features seen on imaging included well defined margins 100 broad dural base 67 calcification84 n3643 and peritumoral edema 51 On MRI 84 and 67 of the lesions were T1 isointense and T2 mildly hyperintense respectively when compared to the brain parenchyma diffusion restriction was variable benign meningiomas 46 and atypical meningiomas100 Choline 100 and Alanine peaks 28 were observed on MRS On post contrast imaging homogeneous enhancement was seen in 95 while a dural tail was seen in only 51 of the cases Benign meningiomas present with typical extraaxial features broad dural base white matter buckling CSF cleft dural tail etc while atypical meningiomas have varied presentations which includecysticnecrotic areas significant vasogenic edema with mass effect and diffusion restriction on DWIKeywords Meningioma Extraaxial lesion Dural tail
Authors and Affiliations
Rishi Philip Mathew, Kumar Muthukumar, Praveen Kumar Natesan, Muthukalathi Karunakaran
Keywords
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- EP ID EP487049
- DOI 10.18231/2348-7682.2018.0017
- Views 79
- Downloads 0
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