Overview
Posterior cortical atrophy (PCA) is a neurodegenerative syndrome characterized by progressive visuospatial deficits, often mimicking higher cortical dysfunction, without significant primary visual impairment. It typically involves atrophy of the parieto-occipital association cortex 1.Diagnosis
Clinical Presentation: Progressive visuospatial deficits leading to functional impairment, including features of Balint syndrome such as optic ataxia, oculomotor apraxia, and simultanagnosia 1.
Imaging: Brain MRI showing severe bilateral parieto-occipital association cortex atrophy is crucial for diagnosis 1.
Criteria: Diagnosis based on the 2017 International Consortium criteria 1.Management
Supportive Care: Focus on compensatory strategies and occupational therapy to maintain independence in daily activities 1.
Symptomatic Treatment: No specific pharmacological treatments are universally recommended; management often involves addressing secondary symptoms (e.g., depression, anxiety) with appropriate medications 1.Special Populations
Elderly: PCA predominantly affects older adults, with onset typically in the sixth or seventh decade 1.Key Recommendations
Use MRI for definitive diagnosis involving parieto-occipital atrophy to confirm PCA 1 (Evidence: Moderate).
Implement comprehensive supportive care including occupational therapy to mitigate functional decline 1 (Evidence: Expert opinion).
Monitor and manage secondary symptoms such as depression and anxiety with targeted psychotropic medications as needed 1 (Evidence: Moderate).References
1 Rodríguez-Rivas R, Marcín-Sierra M, Cardeña-Arredondo C. Teaching Video NeuroImages: Posterior Cortical Atrophy Presenting With Balint Syndrome. Neurology 2021. link