Intracranial meningiomas at a tertiary hospital: Spectrum of MRI findings with histopathologic correlation

SA Journal of Radiology

Field Value
Title Intracranial meningiomas at a tertiary hospital: Spectrum of MRI findings with histopathologic correlation
Creator Pienaar, Jacobus A. Varghese, Jacob
Subject Radiology; neuroradiology; education neuroradiology; meningioma; intracranial neoplasm; magnetic resonance imaging; histology; neurosurgery.
Description Background: Intracranial meningiomas consist of a heterogenous group of histological subtypes, some of which are rare. Data that may play an important role in neurosurgical decision-making regarding the incidence and MRI features of these histological subtypes in the South African population groups, are lacking.Objectives: This study aimed to assess the spectrum of MRI findings and histological subtypes of meningiomas in the South African context, with the goal of improving the paucity of literature on the topic.Method: A retrospective review of the MRI features of 41 cases of histologically confirmed intracranial meningiomas was performed at a tertiary hospital level. Imaging features were audited and correlated with histological subtypes during statistical analysis.Results: Eleven different histological subtypes of meningioma were encountered. World Health Organization (WHO) Grade I meningothelial meningiomas were the most common histological subgroup. Overall, meningiomas were found to be predominantly isointense to grey matter on T1-weighted imaging, irrespective of the histological subtype, with greater signal variability on T2-weighted imaging. Morphologies of specific subtypes are in keeping with the literature.Conclusion: Analysis of this series of intracranial meningiomas did not demonstrate statistically significant differences in MRI features between histological subtypes to allow for accurate preoperative prediction of meningioma subtype or WHO grade. This highlights the importance of definitive histopathological diagnosis rather than over-reliance on presumed benign imaging features.Contribution: This original research article discusses the impact of histological subtype on the MRI appearance of intracranial meningiomas, with the aim to improve the paucity of literature on the subject in the context of the South African population.
Publisher AOSIS
Contributor University of the Witwatersrand Department of Diagnostic Radiology Faculty of Health Sciences
Date 2024-03-27
Type info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion — retrospective; cross-sectional; single center audit; descriptive; correlative
Format text/html application/epub+zip text/xml application/pdf
Identifier 10.4102/sajr.v28i1.2812
Source South African Journal of Radiology; Vol 28, No 1 (2024); 12 pages 2078-6778 1027-202X
Language eng
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Coverage Africa; South Africa 2018 - 2022 Age; Gender
Rights Copyright (c) 2024 Jacobus A. Pienaar, Jacob Varghese