Cervical astrocytoma with arm rigidity: clinical and electrophysiologic features.
A 67-year-old woman developed a fixed, flexed posture of the right arm and hand due to a cervical astrocytoma. EMG showed continuous motor unit potential firing at 8 to 15 Hz with an abnormal silent period, presumably due to the loss of local spinal cord inhibitory interneuronal input.
Weinberg
D H
DH
Department of Neurology, New England Medical Center, Boston, MA 02111.
Logigian
E L
EL
Kelly
J J
JJ
D000200:Action Potentials; D000368:Aged; D000818:Animals; D001132:Arm; D001254:Astrocytoma / Q000150:complications*; D005260:Female; D006801:Humans; D009127:Muscle Rigidity / Q000209:etiology* / Q000503:physiopathology; D013120:Spinal Cord Neoplasms / Q000150:complications*