The occipital lobe was involved in 8 cases, cerebella in 3 cases, brain stem in 2 cases, fronto-parietal subcortical white matter in 2 cases, caudate nucleus in 2 cases and thalamus in 1 case.

• 枕叶受累8例,小脑3例,额顶叶皮质下白质3例,脑干2例,尾状核2例,丘脑1例。