Transverse section of the cerebellum and medulla. The section shows blood vessels with atherosclerotic plaques. The left vertebral artery (seen on the right side of the photograph, green arrow) shows an occlusion in the region of posterior inferior cerebellar artery (PICA). The medulla shows a necrotic area in the lateral and posterior portion (behind the pyramids, yellow arrow). The ipsilateral cerebellar hemisphere in the lower and posterior portion shows necrosis and fragmentation of the tissue, red arrow . Diagnosis: #1 Occlusion of the left vertebral artery at the origin of PICA. #2Left posterolateral medullary infarct. #3 Infarction of the inferior posterior portion of the left cerebellar hemisphere.