Dysgenesis of the posterior segment of the corpus callosum: don't miss SPG45!

In hereditary spastic paraplegias (HSPs), magnetic resonance imaging (MRI) scans of the brain typically show the involvement of the anterior part of the corpus callosum with abnormalities in the white matter fibers of the forceps minor(“ears of the lynx sign”). However, these imaging findings are particularly associated with spastic paraplegia type 11 (SPG11) or spastic paraplegia type 15 (SPG15).[1]