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Published in: Orphanet Journal of Rare Diseases 1/2022

Open Access 01-12-2022 | Magnetic Resonance Imaging | Research

Neuroradiological differentiation of white matter lesions in patients with multiple sclerosis and Fabry disease

Authors: Jakob Rath, Olivia Foesleitner, Lukas Haider, Hubert Bickel, Fritz Leutmezer, Stephan Polanec, Michael A. Arnoldner, Gere Sunder-Plassmann, Daniela Prayer, Thomas Berger, Paulus Rommer, Gregor Kasprian

Published in: Orphanet Journal of Rare Diseases | Issue 1/2022

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Abstract

Objective

White matter lesions (WML) in multiple sclerosis (MS) differ from vascular WML caused by Fabry disease (FD). However, in atypical cases the discrimination can be difficult and may vary between individual raters. The aim of this study was to evaluate interrater reliability of WML differentiation between MS and FD patients.

Materials and methods

Brain MRI scans of 21 patients with genetically confirmed FD were compared to 21 matched patients with MS. Pseudonymized axial FLAIR sequences were assessed by 6 blinded raters and attributed to either the MS or the FD group to investigate interrater reliability. Additionally, localization of WML was compared between the two groups.

Results

The median age of patients was 46 years (IQR 35–58). Interrater reliability was moderate with a Fleiss' Kappa of 0.45 (95%CI 0.3–0.59). Overall, 85% of all ratings in the MS group and 75% in the FD group were correct. However, only 38% of patients with MS and 33% of patients with FD were correctly identified by all 6 raters. WML involving the corpus callosum (p < 0.001) as well as juxtacortical (p < 0.001) and infratentorial lesions (p = 0.03) were more frequently observed in MS patients.

Conclusion

Interrater reliability regarding visual differentiation of WML in MS from vascular WML in FD on standard axial FLAIR images alone is only moderate, despite the distinctive features of lesions in each group.
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Metadata
Title
Neuroradiological differentiation of white matter lesions in patients with multiple sclerosis and Fabry disease
Authors
Jakob Rath
Olivia Foesleitner
Lukas Haider
Hubert Bickel
Fritz Leutmezer
Stephan Polanec
Michael A. Arnoldner
Gere Sunder-Plassmann
Daniela Prayer
Thomas Berger
Paulus Rommer
Gregor Kasprian
Publication date
01-12-2022
Publisher
BioMed Central
Published in
Orphanet Journal of Rare Diseases / Issue 1/2022
Electronic ISSN: 1750-1172
DOI
https://doi.org/10.1186/s13023-022-02187-y

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