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NEUROLOGY 2004;62:1426-1428
© 2004 American Academy of Neurology
Brief Communications

Magnetic resonance imaging of thoracic epidural venous dilation in Hirayama disease

Y. Baba, MD, M. Nakajima, MD, H. Utsunomiya, MD, Y. Tsuboi, MD, F. Fujiki, MD, T. Kusuhara, MD and T. Yamada, MD

From the Department of Neurology (Drs. Baba and Tsuboi), Mayo Clinic, Jacksonville, FL; and Departments of Neurology (Drs. Nakajima, Fujiki, Kusuhara, and Yamada) and Neuroradiology (Dr. Utsunomiya), Fukuoka University School of Medicine, Fukuoka, Japan.

Address correspondence and reprint requests to Dr. Tatsuo Yamada, Department of Neurology, Fukuoka University School of Medicine, 7-45-1 Nanakuma, Johnan-ku, Fukuoka, Japan 814-0180

Hirayama disease is a nonprogressive, asymmetric amyotrophy of the hands and forearms, possibly caused by compression of the lower cervical cord on neck flexion. The authors used phase-contrast MR angiography to study a patient with this disorder and observed abnormal spinal epidural venous dilation on neck flexion. In addition to mechanical compression of the lower cervical cord, venous congestion in the spinal canal may have a role in promoting anterior horn damage.

Received March 19, 2003. Accepted in final form December 15, 2003.




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P. -Y. Jeannet, T. Kuntzer, T. Deonna, and E. Roulet-Perez
Hirayama disease associated with a severe rhythmic movement disorder involving neck flexions
Neurology, April 26, 2005; 64(8): 1478 - 1479.
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