Homolateral ataxia and crural paresis: a crossed cerebral-cerebellar diaschisis.
Open Access
- 1 February 1994
- journal article
- case report
- Published by BMJ in Journal of Neurology, Neurosurgery & Psychiatry
- Vol. 57 (2) , 221-222
- https://doi.org/10.1136/jnnp.57.2.221
Abstract
A patient developed weakness of the right leg and homolateral ataxia of the arm, caused by a subcortical infarct in the area supplied by the anterior cerebral artery in the left paracentral region, demonstrated by CT and MRI. Cerebral blood flow studied by technetium-labelled hexamethyl-propylene-amine oxime using single photon emission computed tomography showed decreased blood flow in the left lateral frontal cortex and in the right cerebellar hemisphere ("crossed cerebral-cerebellar diaschisis"). The homolateral ataxia of the arm may be caused by decreased function of the right cerebellar hemisphere, because of a lesion of the corticopontine-cerebellar tracts, whereas crural hemiparesis is caused by a lesion of the upper part of the corona radiata.Keywords
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