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RT Journal Article
SR Electronic
T1 Hirayama disease: MR diagnosis.
JF American Journal of Neuroradiology
JO Am. J. Neuroradiol.
FD American Society of Neuroradiology
SP 365
OP 368
VO 19
IS 2
A1 Chen, C J
A1 Chen, C M
A1 Wu, C L
A1 Ro, L S
A1 Chen, S T
A1 Lee, T H
YR 1998
UL http://www.ajnr.org/content/19/2/365.abstract
AB 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.