1 From the Neurology Department (A.R.A., I.C., A.J., J.M.L., S.B.), Coimbra Hospital and University Centre (CHUC); and Faculty of Medicine of the University of Coimbra (J.M.L., S.B.), Portugal.
A 66-year-old man developed diplopia, ataxia, and right-hand dexterity loss. Brain MRI revealed T2-hyperintensities in the right cerebellar peduncles, pons, medulla, and cerebellum (Figure 1, A-D).