Ataxic hemiparesis from strategic frontal white matter infarction with crossed cerebellar diaschisis.
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.
Flint
Alexander C
AC
The Neurological Institute of New York, Columbia University Medical Center, New York, USA.
Naley
MaryAlice C
MC
Wright
Clinton B
CB
D000368:Aged; D001921:Brain / Q000473:pathology*; D002524:Cerebellar Ataxia / Q000473:pathology*; D002544:Cerebral Infarction / Q000473:pathology*; D002560:Cerebrovascular Circulation; D006801:Humans; D007511:Ischemia / Q000473:pathology; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D010291:Paresis / Q000473:pathology; D011149:Pons / Q000473:pathology; D020521:Stroke / Q000473:pathology; D014055:Tomography, Emission-Computed; D015899:Tomography, Emission-Computed, Single-Photon