The differential diagnosis of dementia with Lewy bodies (DLB) and sporadic Creutzfeldt-Jakob disease (CJD) may be challenging. Patients with the original diagnosis of possible CJD may occasionally prove to have a pathological diagnosis of DLB, while other cases may fulfill the diagnostic clinical criteria for DLB but subsequent clinical course, cerebrospinal fluid (CSF) and neuropathology findings necessitate diagnostic revision to CJD. We describe a 79-year old patient recently diagnosed with dementia with Lewy bodies (DLB) on the basis of subacute cognitive decline, visual hallucinations and Parkinsonian features, who presented with increasing agitation. Brain neuroimaging with MRI raised the diagnostic suspicion of CJD and subsequent diagnostic work-up with electroencephalography (EEG) and CSF analysis led to the establishment of CJD diagnosis. The present case highlights the clinical utility of novel diagnostic CJD criteria that also incorporate neuroimaging findings in the diagnostic CJD panel.

2nd Department of Neurology University of Athens School of Medicine Attikon University Hospital Athens Greece

2nd Department of Neurology University of Athens School of Medicine Attikon University Hospital Athens Greece; International Clinical Research Center St Anne's University Hospital Brno Czech Republic

2nd Department of Radiology University of Athens School of Medicine Attikon University Hospital Athens Greece

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