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KMID : 1100220050040010045
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Dementia and Neurocognitive Disorders
2005 Volume.4 No. 1 p.45 ~ p.48
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A Case of Strategic Infarction Dementia Caused by the Cerebral Infarction in the Left Occipital Lobe, Cingulate Gyrus, and Retrosplenial Region
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Oh Young-Mi
Cheon Sang-Myung
Kim Jong-Kuk
Park Kyung-Won
Kim Jae-Woo
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Abstract
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Even a single brain infarct can cause dementia when it occurs functionally critical areas of the brain such as angular gyrus, thalamus, basal forebrain, posterior cerebral artery and anterior cerebral artery territories. However, the mechanism of SID is not well understood. We report a 54-year-old right handed woman who suddenly developed memory disturbance, abnormal behaviors with consequent impairments in activity of daily living. She showed right homonymous hemianopsia along with pure alexia (alexia without agraphia), visuospatial and frontal lobe dysfunctions. Brain MRI showed acute infarct involving left posterior cingulate gyrus, retrosplenial region and occipital lobe without involvement of thalamus, hippocampus or ventral medial temporal lobe lesions. Brain perfusion SPECT showed decreased perfusion on both fronto-parietotemporal lobe and left occipital lobe. We suggest that lesions of left posterior cingulate gyrus and retrosplenial region may cause a dementia characterized by memory impairment, frontal executive dysfunction and visuospatial abnormalities.
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KEYWORD
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Vascular dementia, Cerebral infarction, Retrosplenial region, Posterior cingulate gyrus
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