Significance of Sufficient Neck Flexion During Magnetic Resonance Imaging in the Diagnosis of Hirayama Disease: Report of Two Cases
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...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Korean Academy of Rehabilitation Medicine
2019-10-01
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| Series: | Annals of Rehabilitation Medicine |
| Subjects: | |
| Online Access: | http://www.e-arm.org/upload/pdf/arm-2019-43-5-615.pdf |
| _version_ | 1797708336669392896 |
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| author | Seung-Wook No Duk Hyun Sung Du Hwan Kim |
| author_facet | Seung-Wook No Duk Hyun Sung Du Hwan Kim |
| author_sort | Seung-Wook No |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-03-12T06:19:58Z |
| format | Article |
| id | doaj.art-907cbc2c89a8491f9dd7406c3c3f7068 |
| institution | Directory Open Access Journal |
| issn | 2234-0645 2234-0653 |
| language | English |
| last_indexed | 2024-03-12T06:19:58Z |
| publishDate | 2019-10-01 |
| publisher | Korean Academy of Rehabilitation Medicine |
| record_format | Article |
| series | Annals of Rehabilitation Medicine |
| spelling | doaj.art-907cbc2c89a8491f9dd7406c3c3f70682023-09-03T02:17:05ZengKorean Academy of Rehabilitation MedicineAnnals of Rehabilitation Medicine2234-06452234-06532019-10-0143561562010.5535/arm.2019.43.5.6154124Significance of Sufficient Neck Flexion During Magnetic Resonance Imaging in the Diagnosis of Hirayama Disease: Report of Two CasesSeung-Wook No0Duk Hyun Sung1Du Hwan Kim2 Department of Rehabilitation Medicine, Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Korea Department of Physical and Rehabilitation Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea Department of Rehabilitation Medicine, Dongsan Medical Center, Keimyung University School of Medicine, Daegu, KoreaIt 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.http://www.e-arm.org/upload/pdf/arm-2019-43-5-615.pdfmonomelic amyotrophymyelopathymagnetic resonance imaging |
| spellingShingle | Seung-Wook No Duk Hyun Sung Du Hwan Kim Significance of Sufficient Neck Flexion During Magnetic Resonance Imaging in the Diagnosis of Hirayama Disease: Report of Two Cases Annals of Rehabilitation Medicine monomelic amyotrophy myelopathy magnetic resonance imaging |
| title | Significance of Sufficient Neck Flexion During Magnetic Resonance Imaging in the Diagnosis of Hirayama Disease: Report of Two Cases |
| title_full | Significance of Sufficient Neck Flexion During Magnetic Resonance Imaging in the Diagnosis of Hirayama Disease: Report of Two Cases |
| title_fullStr | Significance of Sufficient Neck Flexion During Magnetic Resonance Imaging in the Diagnosis of Hirayama Disease: Report of Two Cases |
| title_full_unstemmed | Significance of Sufficient Neck Flexion During Magnetic Resonance Imaging in the Diagnosis of Hirayama Disease: Report of Two Cases |
| title_short | Significance of Sufficient Neck Flexion During Magnetic Resonance Imaging in the Diagnosis of Hirayama Disease: Report of Two Cases |
| title_sort | significance of sufficient neck flexion during magnetic resonance imaging in the diagnosis of hirayama disease report of two cases |
| topic | monomelic amyotrophy myelopathy magnetic resonance imaging |
| url | http://www.e-arm.org/upload/pdf/arm-2019-43-5-615.pdf |
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