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Reduction in White Matter Before and After the Development of Delusions of Theft in a Patient With Alzheimer Disease
Shutaro Nakaaki, M.D., Ph.D.; Junko Sato, Ph.D.; Katsuyoshi Torii, M.D., Ph.D.; Takatsune Kawaguchi, M.D., Ph.D.; Akiko Kawaguchi, M.D., Ph.D.; Jin Narumoto, M.D., Ph.D.; Masaru Mimura, M.D., Ph.D.
The Journal of Neuropsychiatry and Clinical Neurosciences 2013;25:E15-E16. doi:10.1176/appi.neuropsych.12090214
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Dept. of Neuropsychiatry
Keio University School of Medicine
Tokyo, Japan (SN, MM)
Dept. of Psychiatry and Cognitive-Behavioral Medicine
Nagoya City University Graduate School of Medical Sciences
Nagoya, Japan (SN, JS, KT, TK, AK)
Dept. of Radiology
Nagoya City University Graduate School of Medical Sciences
Nagoya, Japan
Dept. of Psychiatry
Graduate School of Medical Science
Kyoto Prefectural University of Medicine
Kyoto, Japan (JN)

Correspondence: Dr. Shutaro Nakaaki; e-mail: hzi05510@nifty.com

Copyright © 2013 by the American Psychiatric Association

Extract

To the Editor: A recent study1 has suggested that white-matter (WM) lesions in Alzheimer disease (AD) patients are associated with delusions. Diffusion tensor imaging (DTI) is an important tool for detecting degradations in fractional anisotropy (FA) associated with WM lesions.2 However, whether FA results change before or after the onset of delusions in AD patients is unclear. Here, we report on a patient with AD who developed delusions of theft and exhibited a reduction in FA over 2 years.

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TABLE 1.Decreased Fractional Anisotropy (FA) Values in the Genu of the Corpus Callosum in the Presently-Reported Patient, Versus Other AD Patients Who Did Not Develop Psychotic Symptoms, group means (SD)
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References

Palmqvist  S;  Sarwari  A;  Wattmo  C  et al:  Association between subcortical lesions and behavioral and psychological symptoms in patients with Alzheimer’s disease.  Dement Geriatr Cogn Disord 2011; 32:417–423
[CrossRef] | [PubMed]
 
Oishi  K;  Mielke  MM;  Albert  M  et al:  DTI analyses and clinical applications in Alzheimer’s disease.  J Alzheimers Dis 2011; 26(Suppl 3):287–296
[PubMed]
 
Stahl  R;  Dietrich  O;  Teipel  SJ  et al:  White-matter damage in Alzheimer disease and mild cognitive impairment: assessment with diffusion-tensor MR imaging and parallel imaging techniques.  Radiology 2007; 243:483–492
[CrossRef] | [PubMed]
 
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