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Departments of Laboratory Medicine and Pathology, Neurology and Psychiatry, University of Minnesota Hospitals, and the Psychiatry Research Laboratories of St. Paul Ramsey Medical Center.
We studied five demented patients who, on neuropathologic examination, had cell loss and Lewy bodies in substantia nigra and locus ceruleus and few Alzheimer-type changes. The nucleus basalis had minimal cell loss in three patients and was not available in two. The lesions in the substantia nigra and locus ceruleus were unlikely to account for the dementia, and other structural or biochemical derangements, probably cortical but possibly subcortical, must also have been present but not visible at the light microscopic level.
Address correspondence and reprint requests to Dr. Knopman, Department of Neurology, Box 295 Mayo, University of Minnesota Hospitals, Minneapolis, MN 55455.
An earlier version of this work was the winner of the G. Milton Shy Award of the American Academy of Neurology for 1984 (Dr. Heilig).
Supported by NIH grant NS14583 and by Grant No. 8347 from the St. Paul Ramsey Hospital Medical Education and Research Foundation.
Accepted for publication September 5, 1984.
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