抄録
A 51-year-old female presented with an extremely unusual cerebellar porencephalic lesion manifesting as progressive cerebellar signs and cranial nerve pareses. T1-weighted magnetic resonance imaging demonstrated a low-signal-intensity area in the left cerebellar hemisphere suggesting a cavity communicating with the fourth ventricle. Histological study showed the wall of the cavity contained nonspecific gliosis. A diagnosis of porencephaly was made.
