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Behavioural Neurology
Volume 7 (1994), Issue 2, Pages 97-99
Case Report

Asymmetrical Blood Flow in the Temporal Lobe in the Charles Bonnet Syndrome: Serial Neuroimaging Study

N. Adachi,1 M. Nagayama,1,2 K. Anami,1 K. Arima,1 and H. Matsuda1

1National Center Hospital for Mental, Nervous, and Muscular Disorders, National Center of Neurology and Psychiatry, 4-1-1 Ogawahigashi, Kodaira, Tokyo 187, Japan
2Department of Psychiatry, Japanese Red Cross Medical Center, Tokyo, Japan

Received 2 January 1994; Accepted 16 June 1994

Copyright © 1994 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Clinical features and results of neuroimagings of an 86 year old woman with the Charles Bonnet syndrome are reported. She had become completely blind bilaterally due to cataracts and glaucoma. Shortly after an operation for cataracts, she developed visual hallucinations which lasted for 22 years. She had no deterioration of intelligence. Computed tomography (CT) and magnetic resonance imaging (MRI) showed moderate generalized atrophy, particularly of the temporal lobes. A serial single photon emission computed tomography (SPECT) study during visual hallucinations demonstrated hyperperfusion in the left temporal region and the basal ganglia and hypoperfusion in the right temporal region. These findings suggest that asymmetrical blood flow, particularly in the temporal regions, may be correlated with visual hallucination in the Charles Bonnet syndrome.