Significance of Sufficient Neck Flexion During Magnetic Resonance Imaging in the Diagnosis of Hirayama Disease: Report of Two Cases
Annals of Rehabilitation Medicine
;
: 615-620, 2019.
Article
in English
| WPRIM
| ID: wpr-762662
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.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Spinal Cord Diseases
/
Spine
/
Magnetic Resonance Imaging
/
Upper Extremity
/
Diagnosis
/
Epidural Space
/
Cervical Cord
/
Neck
Type of study:
Diagnostic study
Limits:
Adolescent
/
Humans
Language:
English
Journal:
Annals of Rehabilitation Medicine
Year:
2019
Type:
Article
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