Ataxic hemiparesis from strategic frontal white matter infarction with crossed cerebellar diaschisis.
نویسندگان
چکیده
BACKGROUND Ataxic hemiparesis is a classic lacunar syndrome that most often localizes to the pons. RESULTS We report 3 patients who presented with left-sided ataxic hemiparesis and were found on imaging to have small right frontal subcortical white matter infarcts in similar locations by diffusion-weighted MRI. [99mTc]hexamethylpropylenamine oxime single-photon emission computed tomography (SPECT) scans in all 3 patients showed decreased metabolism in the contralateral cerebellar hemisphere, indicative of crossed cerebellar diaschisis (CCD). CONCLUSIONS CCD is under-recognized in ataxic hemiparesis and may have implications for functional recovery after this type of ischemic stroke.
منابع مشابه
Ataxic Hemiparesis Associated with Cortical Infarct Localized in the Postcentral Gyrus
Ataxic hemiparesis (AH) is a classic lacunar syndrome associated with localized damage to the pons, internal capsule, thalamus, or corona radiata. A depression of metabolic activity known as crossed cerebellar diaschisis (CCD) is frequently observed in the cerebellar hemisphere contralateral to the site of the lesion in patients with AH. Though small cortical or subcortical lesions may result i...
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متن کاملCrossed cerebellar diaschisis.
The term "diaschisis," as originally used by Von-Monakow (1), implies an immediate decrease in neuronal activity in a region due to an interruption of its afferent axonal supply. Experimental studies, in animals , of unilateral ischemia in which neuronal function in the contralateral hemisphere was demonstrated to be impaired, provided evidence for such a mechanism (2). The corpus callosum appe...
متن کاملCrossed Ataxia A
Background and Purpose—Ever since the seminal description of ataxic hemiparesis contralateral to a pontine lesion by Miller-Fisher, the question of why contralesional crossing pontocerebellar fibers do not more frequently produce ipsilesional hemiataxia was raised. The few cases of “quadrataxic hemiparesis” or bilateral leg ataxia remain exceptions. Summary of Case—We report an even more unusua...
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عنوان ژورنال:
- Stroke
دوره 37 1 شماره
صفحات -
تاریخ انتشار 2006