Regional Cerebral Blood Flow in Frontal Lobe Dementia of Non-Alzheimer Type

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Abstract
Twenty-five out of 26 cases of autopsy-verified frontal lobe degeneration of non-Alzheimer type (FLD) were found to have focal frontal or frontotemporal blood flow reductions involving both hemispheres. The deviant case had an asymmetric frontal pathology only apparent on the right side. Focal reduction of blood flow in the frontal lobes is, however, a common and unspecific flow abnormality found in e.g. Pick''s disease, Creutzfeldt-Jakob''s disease, and in some cases of Alzheimer''s disease. Low frontal flow has also been reported in schizophrenia and in toxic encephalopathy. Since a characteristic feature of FLD is a steady progress of the pathology, serial flow measurements extending over several years are especially informative.

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