Magnetic resonance neurography in a patient with distal neuralgic amyotrophy

Ryunosuke Nagao; Tomomasa Ishikawa; Yasuaki Mizutani; Yoshiki Niimi; Sayuri Shima; Mizuki Ito; Kazuhiro Murayama; Hiroshi Toyama; Akihiro Ueda; Hirohisa Watanabe

doi:10.2169/internalmedicine.6440-20

Magnetic resonance neurography in a patient with distal neuralgic amyotrophy

Ryunosuke Nagao, Tomomasa Ishikawa, Yasuaki Mizutani, Yoshiki Niimi, Sayuri Shima, Mizuki Ito, Kazuhiro Murayama, Hiroshi Toyama, Akihiro Ueda, Hirohisa Watanabe

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	1759-1761
Number of pages	3
Journal	Internal Medicine
Volume	60
Issue number	11
DOIs	https://doi.org/10.2169/internalmedicine.6440-20
Publication status	Published - 01-06-2021

All Science Journal Classification (ASJC) codes

Internal Medicine

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10.2169/internalmedicine.6440-20

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title = "Magnetic resonance neurography in a patient with distal neuralgic amyotrophy",

abstract = "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.",

keywords = "Diffusion-weighted whole-body imaging with background signal suppression, Distal, Magnetic resonance imaging, Magnetic resonance neurography, Neuralgic amyotrophy",

author = "Ryunosuke Nagao and Tomomasa Ishikawa and Yasuaki Mizutani and Yoshiki Niimi and Sayuri Shima and Mizuki Ito and Kazuhiro Murayama and Hiroshi Toyama and Akihiro Ueda and Hirohisa Watanabe",

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T1 - Magnetic resonance neurography in a patient with distal neuralgic amyotrophy

AU - Nagao, Ryunosuke

AU - Ishikawa, Tomomasa

AU - Mizutani, Yasuaki

AU - Niimi, Yoshiki

AU - Shima, Sayuri

AU - Ito, Mizuki

AU - Murayama, Kazuhiro

AU - Toyama, Hiroshi

AU - Ueda, Akihiro

AU - Watanabe, Hirohisa

PY - 2021/6/1

Y1 - 2021/6/1

N2 - 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.

AB - 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.

KW - Diffusion-weighted whole-body imaging with background signal suppression

KW - Distal

KW - Magnetic resonance imaging

KW - Magnetic resonance neurography

KW - Neuralgic amyotrophy

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JO - Internal Medicine

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ER -

Magnetic resonance neurography in a patient with distal neuralgic amyotrophy

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