Unilateral Holmes tremor and focal dystonia after Gamma Knife surgery.
Holmes tremor is a rare, involuntary slow shaking in the proximal portions of the limbs during rest and voluntary motion. It occurs frequently after midbrain damage. The authors report on a 20-year-old man who developed Holmes tremor after undergoing Gamma Knife surgery for an arteriovenous malformation in the left thalamus extending to the tegmentum. This is possibly the first report of such an adverse effect after radiosurgery. The tremor was believed to be secondary to radiation-induced infarction of the midbrain.
Chiou
Thomas S M
TS
Department of Neurosurgery, China Medical University Hospital, Taichung, Taiwan, Republic of China. tsmchiou@pchome.com.tw
Tsai
Chon-Haw
CH
Lee
Ying-Hsuan
YH
D020526:Brain Stem Infarctions / Q000209:etiology* / Q000473:pathology; D020821:Dystonic Disorders / Q000209:etiology*; D006801:Humans; D002538:Intracranial Arteriovenous Malformations / Q000601:surgery*; D008297:Male; D016634:Radiosurgery / Q000009:adverse effects*; D014202:Tremor / Q000209:etiology*; D055815:Young Adult