平山病：磁共振成像诊断
Hirayama disease: MR diagnosis.
作者信息
Chen C J, Chen C M, Wu C L, Ro L S, Chen S T, Lee T H
机构信息
Department of Diagnostic Radiology, Chang Gung Memorial Hospital and Medical College, Taipei, Taiwan, Republic of China.
出版信息
AJNR Am J Neuroradiol. 1998 Feb;19(2):365-8.
Abstract
We report the MR findings in two cases of Hirayama disease, a kind of cervical myelopathy related to flexion movements of the neck. In flexion MR studies, we can see the striking and pathognomonic picture of anterior shifting of posterior dura at the lower cervical spinal canal. In nonflexion studies, we find that asymmetric cord atrophy, especially at the lower cervical cord, though subtle, is highly suggestive of Hirayama disease. When it is seen, a flexion MR study is warranted to prove this diagnosis.
摘要
我们报告了两例平山病的磁共振成像（MR）表现，平山病是一种与颈部屈曲运动相关的颈髓病。在屈曲位MR研究中，我们可以看到下颈椎管硬脊膜后移的显著且具有诊断意义的影像。在非屈曲位研究中，我们发现脊髓不对称萎缩，尤其是下颈段脊髓，尽管较为轻微，但高度提示平山病。一旦发现这种情况，进行屈曲位MR研究以证实该诊断是必要的。
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