title: Ataxic hemiparesis from strategic frontal white matter infarction with crossed cerebellar diaschisis.
abstract: 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.
authors.affiliation: The Neurological Institute of New York, Columbia University Medical Center, New York, USA.
authors.forename: Alexander C
authors.initials: AC
authors.lastname: Flint
authors.forename: MaryAlice C
authors.initials: MC
authors.lastname: Naley
authors.forename: Clinton B
authors.initials: CB
authors.lastname: Wright
mesh_terms: 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