Magnetic Resonance Neurography in a Patient with Distal Neuralgic Amyotrophy

The pathophysiology of neuralgic amyotrophy (NA) remains to be elucidated. However, high-resolution magnetic resonance imaging and ultrasound sonography have provided new insights into the mechanism underlying the development of NA and its diagnosis. We report a case of idiopathic distal NA with hyp...

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Autores principales: Nagao, Ryunosuke, Ishikawa, Tomomasa, Mizutani, Yasuaki, Niimi, Yoshiki, Shima, Sayuri, Ito, Mizuki, Murayama, Kazuhiro, Toyama, Hiroshi, Ueda, Akihiro, Watanabe, Hirohisa
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Japanese Society of Internal Medicine 2020
Materias:
Case Report
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8222128/
https://www.ncbi.nlm.nih.gov/pubmed/33361681
http://dx.doi.org/10.2169/internalmedicine.6440-20
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author Nagao, Ryunosuke
Ishikawa, Tomomasa
Mizutani, Yasuaki
Niimi, Yoshiki
Shima, Sayuri
Ito, Mizuki
Murayama, Kazuhiro
Toyama, Hiroshi
Ueda, Akihiro
Watanabe, Hirohisa
author_facet Nagao, Ryunosuke
Ishikawa, Tomomasa
Mizutani, Yasuaki
Niimi, Yoshiki
Shima, Sayuri
Ito, Mizuki
Murayama, Kazuhiro
Toyama, Hiroshi
Ueda, Akihiro
Watanabe, Hirohisa
author_sort Nagao, Ryunosuke
collection PubMed
description The pathophysiology of neuralgic amyotrophy (NA) remains to be elucidated. However, high-resolution magnetic resonance imaging and ultrasound sonography have provided new insights into the mechanism underlying the development of NA and its diagnosis. We report a case of idiopathic distal NA with hyperintensity and thickening in the inferior trunk extending to the posterior and medial fasciculus of the left brachial plexus, which was detected by magnetic resonance neurography (MRN) with diffusion-weighted whole-body imaging with background body signal suppression (DWIBS). The abnormal signal intensity diminished after the improvement of symptoms following corticosteroid treatment. MRN with DWI can help diagnose distal NA and evaluate the post-therapeutic response.
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spelling pubmed-82221282021-06-27 Magnetic Resonance Neurography in a Patient with Distal Neuralgic Amyotrophy Nagao, Ryunosuke Ishikawa, Tomomasa Mizutani, Yasuaki Niimi, Yoshiki Shima, Sayuri Ito, Mizuki Murayama, Kazuhiro Toyama, Hiroshi Ueda, Akihiro Watanabe, Hirohisa Intern Med Case Report The pathophysiology of neuralgic amyotrophy (NA) remains to be elucidated. However, high-resolution magnetic resonance imaging and ultrasound sonography have provided new insights into the mechanism underlying the development of NA and its diagnosis. We report a case of idiopathic distal NA with hyperintensity and thickening in the inferior trunk extending to the posterior and medial fasciculus of the left brachial plexus, which was detected by magnetic resonance neurography (MRN) with diffusion-weighted whole-body imaging with background body signal suppression (DWIBS). The abnormal signal intensity diminished after the improvement of symptoms following corticosteroid treatment. MRN with DWI can help diagnose distal NA and evaluate the post-therapeutic response. The Japanese Society of Internal Medicine 2020-12-22 2021-06-01 /pmc/articles/PMC8222128/ /pubmed/33361681 http://dx.doi.org/10.2169/internalmedicine.6440-20 Text en Copyright © 2021 by The Japanese Society of Internal Medicine https://creativecommons.org/licenses/by-nc-nd/4.0/The Internal Medicine is an Open Access journal distributed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. To view the details of this license, please visit (https://creativecommons.org/licenses/by-nc-nd/4.0/).
spellingShingle Case Report
Nagao, Ryunosuke
Ishikawa, Tomomasa
Mizutani, Yasuaki
Niimi, Yoshiki
Shima, Sayuri
Ito, Mizuki
Murayama, Kazuhiro
Toyama, Hiroshi
Ueda, Akihiro
Watanabe, Hirohisa
Magnetic Resonance Neurography in a Patient with Distal Neuralgic Amyotrophy
title Magnetic Resonance Neurography in a Patient with Distal Neuralgic Amyotrophy
title_full Magnetic Resonance Neurography in a Patient with Distal Neuralgic Amyotrophy
title_fullStr Magnetic Resonance Neurography in a Patient with Distal Neuralgic Amyotrophy
title_full_unstemmed Magnetic Resonance Neurography in a Patient with Distal Neuralgic Amyotrophy
title_short Magnetic Resonance Neurography in a Patient with Distal Neuralgic Amyotrophy
title_sort magnetic resonance neurography in a patient with distal neuralgic amyotrophy
topic Case Report
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8222128/
https://www.ncbi.nlm.nih.gov/pubmed/33361681
http://dx.doi.org/10.2169/internalmedicine.6440-20
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