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Imaging manifestations of age based subgroups. DWM: Deep white matter, CWM: Cerebellar white matter, ONH: Optic nerve hypertrophy, DH: Dentate hilum hyperintensity, DG: Deep gray, PPVWM: Posterior periventricular and deep white matter, ICST: Isolated corticospinal tract involvement. X-axis: Imaging findings, Y-axis: Percentages of involvement.
