IntroductionFrontotemporal lobar degeneration (FTLD) is a heterogeneous disorder with various clinical and histological subtypes [22]. FTLD is the second most common cause of presenile dementia with different genetic subtypes [20]. Despite the fact that most cases have a presenile onset, FTLD is not rare amongst elderly patients [3]. A recent neuropathological study showed that age together with vascular and Alzheimer-related co-pathology contributes
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