A signature pattern of cortical atrophy in dementia with Lewy bodies: A study on 333 patients from the European DLB consortium

Ketil Oppedal, Daniel Ferreira, Lena Cavallin, Afina W. Lemstra, Mara ten Kate, Alessandro Padovani, Irena Rektorova, Laura Bonanni, Lars-Olof Wahlund, Knut Engedal, Flavio Nobili, Milica Kramberger, John-Paul Taylor, Jakub Hort, Jon Snædal, Frederic Blanc, Zuzana Walker, Angelo Antonini, Eric Westman, Dag AarslandAlzheimer's Disease Neuroimaging Initiative

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Introduction: We explored regional brain atrophy patterns and their clinical correlates in dementia with Lewy bodies (DLB). Methods: In this multicentre study, we included a total of 333 patients with DLB, 352 patients with Alzheimer's disease (AD), and 233 normal controls and used medial temporal lobe atrophy, posterior atrophy, and frontal atrophy (GCA-F) visual rating scales. Patients were classified according to four atrophy patterns. Results: Patients with DLB had higher scores on all the three atrophy scales than normal controls but had less medial temporal lobe atrophy than those with AD (all P values <.001). A signature hippocampal-sparing pattern of regional atrophy was observed in DLB. The magnetic resonance imaging measures showed 65% ability to discriminate between DLB and AD and marginally contributed to the discrimination over and above the core clinical features. Discussion: The most common pattern of atrophy of DLB was hippocampal-sparing. Future studies should explore whether comorbid AD pathology underlies the atrophy patterns seen in DLB.
Original languageEnglish
Pages (from-to)400-409
JournalAlzheimer's and Dementia
Volume15
Issue number3
DOIs
Publication statusPublished - 1 Mar 2019

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