additional abnormalities included degeneration of the posterior columns in the spinal cord , gracilis and cuneate nuclei and medial lemnisci , atrophy of the spinocerebellar tracts and clarke 's columns , cerebral cortex , cerebellum , chiefly involving the rostral vermis , inferior olivary nuclei and demyelination of the sural nerves .
C0007765
cerebellum
C0228482
vermis