Pattern and location of cerebral atrophy is a useful discriminator for subtypes of frontotemporal lobar degeneration. In the frontotemporal dementia subtype there is asymmetric bilateral frontal-temporal atrophy greater on the right side 1. Frontotemporal dementia has also been shown to have a propensity for caudate atrophy and this maybe initially inferred by the disproportionately dilated frontal horns of the lateral ventricle 2.