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  • Title: White matter signal hyperintensities in the brains of patients with late paraphrenia and the normal, community-living elderly.
    Author: Howard R, Cox T, Almeida O, Mullen R, Graves P, Reveley A, Levy R.
    Journal: Biol Psychiatry; 1995 Jul 15; 38(2):86-91. PubMed ID: 7578654.
    Abstract:
    We determined the prevalence and anatomical location of areas of white matter hyperintensity visualized by magnetic resonance imaging in the brains of 38 late paraphrenic patients with an onset of psychotic illness after the age of 60 and 31 healthy aged community volunteers. All degrees of white matter signal hyperintensity were very common in both groups, and there was no excess of such changes in the brain of patients. Periventricular white matter and subcortical grey matter hyperintensities were significantly associated with both measured diastolic and systolic blood pressure in patients and control subjects. Periventricular and deep white matter, together with subcortical grey matter hyperintensities, were significantly associated with increased age. The excess of such presumed brain-imaging abnormalities previously reported in patients with an onset of psychosis late in life may be a consequence of earlier authors' failure to include examination of appropriate community control populations and to carefully exclude patients with evidence of stroke.
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