The clinical signs of cerebellitis are usually bilateral and symmetrical. W
e report the case of a 9-year-old girl who presented with acute hemiataxia
and flaccid hemiparesis associated with a lesion in the ipsilateral cerebel
lar cortex two weeks after a viral upper respiratory tract infection. The c
linical outcome was good without treatment Imaging follow-up showed hemiatr
ophy of the cerebellar cortex.