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Significance of Sufficient Neck Flexion During Magnetic Resonance Imaging in the Diagnosis of Hirayama Disease: Report of Two Cases

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Author(s)
Seung-Wook NoDuk Hyun SungDu Hwan Kim
Keimyung Author(s)
Kim, Du Hwan
Department
Dept. of Rehabilitation Medicine (재활의학)
Journal Title
Annals of rehabilitation medicine
Issued Date
2019
Volume
43
Issue
5
Keyword
Monomelic amyotrophyMyelopathyMagnetic resonance imaging
Abstract
It is difficult to distinguish Hirayama disease (HD) from other mimicking disorders in adolescent patients with distal upper limb weakness. The prevailing theory of HD postulates that the lower cervical cord is susceptible to compression during neck flexion because of insufficient growth of the dura relative to the spinal column. Confirmation of a dynamic change in the dorsal epidural space on magnetic resonance imaging (MRI) during neck flexion is essential for diagnosing HD. However, neck flexion MRI has not been routinely performed in juvenile patients with distal upper limb weakness in the absence of suspected HD. We report two cases of HD that were initially confused with other diseases because of insufficient or absent cervical flexion during MRI. Full-flexion MRI showed typical findings of HD in both cases. Our cases suggest that dynamic cervical MRI in the fully flexed position is necessary for evaluating suspected HD.
Keimyung Author(s)(Kor)
김두환
Publisher
School of Medicine (의과대학)
Citation
Seung-Wook No et al. (2019). Significance of Sufficient Neck Flexion During Magnetic Resonance Imaging in the Diagnosis of Hirayama Disease: Report of Two Cases. Annals of rehabilitation medicine, 43(5), 615–620. doi: 10.5535/arm.2019.43.5.615
Type
Article
ISSN
2234-0653
Source
https://www.e-arm.org/journal/view.php?doi=10.5535/arm.2019.43.5.615
DOI
10.5535/arm.2019.43.5.615
URI
https://kumel.medlib.dsmc.or.kr/handle/2015.oak/42310
Appears in Collections:
1. School of Medicine (의과대학) > Dept. of Rehabilitation Medicine (재활의학)
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