Posterior cortical atrophy (2012)Posterior cortical atrophy (PCA) is a neurodegenerative syndrome that is characterised by progressive decline in visuospatial, visuoperceptual, literacy, and praxic skills. The progressive neurodegeneration affecting parietal, occipital, and occipitotemporal cortices that underlies PCA is attributable to Alzheimer's disease in most patients. However, alternative underlying causes, including dementia with Lewy bodies, corticobasal degeneration, and prion disease, have also been identified, and not all patients with PCA have atrophy on clinical imaging. This heterogeneity has led to inconsistencies in diagnosis and terminology and difficulties in comparing studies from different centres, and has restricted the generalisability of findings from clinical trials and investigations of factors that drive phenotypic variability.
Sebastian J Crutch, Manja Lehmann, Jonathan M Schott, Gil D Rabinovici, Martin N Rossor, Nick C Fox, Posterior cortical atrophy, The Lancet Neurology, Volume 11, Issue 2, 2012, 170-178