A Case of Cervical cord Tumor with Focal Myokymic Discharge in Intrinsic Hand Muscles

J Korean Neurol Assoc > Volume 9(4); 1991 > Article

Journal of the Korean Neurological Association 1991;9(4): 481-484.

손근육에서 국소성 Myokymic Discharge를 보인 경수종양 1예

홍승희, 배재천,정근호,조필자,선우일남

국립의료원 신경과. 연세대학교 신경과.

A Case of Cervical cord Tumor with Focal Myokymic Discharge in Intrinsic Hand Muscles

Seung Hee Hong, M.D., Jae Chun Bae, M.D., Keun Ho Cheong, M.D., Phel Za Cho, M.D., Il Nam Sunwoo, M.D.*

Dep. Of Neurology, National Medical Center Dep. Of Neurology, Yonsei University

Abstract

Myokymic discharge is a train of motor unit potentials that occur spontaneously, recur regularly, and sometimes may be associated with clinical myokymia. We report a 39-years-old male with progressive muscle weakness and atrophy of right upper extremity, who revealed focal myokymic discharges in the intrinsic hand muscles where no denervation was evident on EMG study. The cervical CTMM and MRI study showed a large cervical cord tumor at C3-C6 spine level. Postoperative pathological diagnosis of the tumor was anaplastic astrocytoma.