Cerebellar infarcts often occur by the involvement of posterior inferior cerebellar artery (PICA) and superior cerebellar artery. Bilateral cerebellar infarction occurs by the involvement of lateral or medial PICA branches rarely. These PICA infarctions occor by the stenosis of PICA that is branched from left vertebral artery. We wanted to present these cases because of their rarity.
Case 1:
A.A. 52 year-old, male, presented with abrupt vertigo, difficulty in walking, imbalance and vomiting. In his neurologic examination; nystagmus looking at left, gait ataxia and impairment in bilateral cerebellar tests obtained. In cranial magnetic resonance imaging, bilateral cerebellar infarct and occlusion in distal right vertebral artery was determined.
Case 2:
S. G. 50 year-old, male presented with abrupt vertigo, nausea and vomiting, not standing, imbalance. In his neurologic examination. We obtained tendency to fall ahead and back while walking. In cranial MR imaging, ischemia in milimetric dimensions in both cerebellar hemispheres in paravermian localization and in left cerebellar hemisphere.
Keywords: Serebellar enfarkt, posterior inferior serebellar arter, vertebral arter