A case of small cerebral infarction presenting with drop hand

Abstract

A case presenting with unilateral drop hand was studied with CT scan and MRI, which showed a characteristic local cerebral infarction in the contralateral precentral gyrus 10 and 17 days after the onset.
The characteristic features of drop hand were reviewed, and differential diagnosis between peripheral radial nerve palsy and monoparesis due to a brain lesion was discussed. MRI would be promising in the diagnosis of small infarctions and in the understanding of the functional anatomy of the brain.