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Detection of Lewy body disease in patients with late-onset depression, anxiety and psychotic disorder with myocardial meta-iodobenzylguanidine scintigraphy
International Journal of Geriatric Psychiatry, 08/10/09

Kobayashi K et al. – Group VH was considered to DLBD, and Group PCD was regarded as PDD or DLBD with early psychotic presentation. Group DA has a possibility of early depression or anxiety disorder of LBD although it lacked DLBD criteria. Atypical Parkinsonian syndromes are associated with cognitive disturbance irrespective of psychiatric profiles.

Methods

Thirty–four patients were classed into three groups according to three main symptoms, 11 patients with visual hallucination (VH), 13 with depression–anxiety (DA), and 10 with psychosis with cognitive disturbance (PCD).
Cutoff values of heart–to–mediastinum (HM) ratio of MIBG were set at 1.78 in early phase or 1.68 in late phase.

Results

Group VH patients showed a trend toward higher age at onset and occipital lobe hypoperfusion.
Group DA patients lacked central and core features of DLBD and five of them showed frontal lobe hypoperfusion.
Group PCD patients had the highest frequencies of suggestive symptoms and UPDRS scores and showed temporal lobe hypoperfusion.
HM ratio was not associated with clinical profiles of three groups.
Cognitive function was more severely disturbed in atypical Parkinsonian syndrome cases at an initial visit.

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