title: The woman who needed a pet.
abstract: A 72-year-old woman developed difficulty reading, driving, and playing dominoes. Ophthalmologic examination revealed a homonymous hemianopia, but brain MRI showed no abnormality to explain the visual field defect. Neuropsychiatric testing demonstrated severely impaired visual processing (simultagnosia, visual agnosia, visuospatial difficulty). Positron emission tomography revealed hypometabolism of both parietal and occipital lobes consistent with posterior cortical atrophy or the visual variant of Alzheimer disease. Functional neuroimaging should be considered in the setting of a normal MRI among patients with signs and symptoms of the visual variant Alzheimer disease.
authors.affiliation: Department of Ophthalmology, University of Minnesota, Minneapolis, MN 55455, USA.
authors.forename: Michelle
authors.initials: M
authors.lastname: Atchison
authors.forename: Andrew R
authors.initials: AR
authors.lastname: Harrison
authors.forename: Michael S
authors.initials: MS
authors.lastname: Lee
mesh_terms: D000368:Aged; D000544:Alzheimer Disease / Q000000981:diagnostic imaging* / Q000473:pathology; D001284:Atrophy; D001921:Brain / Q000000981:diagnostic imaging* / Q000473:pathology; D002540:Cerebral Cortex / Q000473:pathology; D005260:Female; D006423:Hemianopsia / Q000175:diagnosis; D006801:Humans; D008279:Magnetic Resonance Imaging; D009483:Neuropsychological Tests; D049268:Positron-Emission Tomography; D014786:Vision Disorders / Q000175:diagnosis; D058609:Visual Field Tests; D014794:Visual Fields