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Multicenter clinicopathological correlation in dementia

J Victoroff1, W J Mack, S A Lyness

  • 1University of Southern California School of Medicine, Rancho Los Amigos Medical Center, Downey 90242, USA.

The American Journal of Psychiatry
|October 1, 1995
PubMed
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Clinical diagnoses of Alzheimer's disease (AD) are highly accurate, but may miss cerebrovascular pathology and Lewy bodies. Accurate ante-mortem diagnosis is crucial for effective dementia treatment.

Area of Science:

  • Neurology
  • Neuroscience
  • Pathology

Background:

  • Accurate diagnosis of dementia is critical for effective treatment.
  • Alzheimer's disease (AD) is a progressive neurodegenerative disorder.
  • Distinguishing AD from other dementia types, like vascular dementia, can be challenging.

Purpose of the Study:

  • To assess the accuracy of clinical dementia diagnoses against neuropathological findings.
  • To evaluate the diagnostic performance in a multicenter Alzheimer's disease research program.

Main Methods:

  • Compared clinical diagnoses with post-mortem neuropathological results.
  • Analyzed data from 196 dementia cases across seven collaborating Alzheimer's disease research centers.

Main Results:

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  • 83% of patients clinically diagnosed with probable or possible AD showed neuropathological confirmation.
  • 17% of clinically diagnosed probable AD patients had cerebral infarcts.
  • 55% of patients clinically diagnosed with vascular dementia had significant Alzheimer's disease-type pathology.

Conclusions:

  • Clinical diagnosis of Alzheimer's disease is generally accurate but may overlook co-existing pathologies like cerebrovascular disease or Lewy bodies.
  • There's a notable tendency to misdiagnose Alzheimer's disease-type pathology in patients presenting with clinical vascular dementia.
  • Optimizing ante-mortem diagnostic methods is increasingly important with the advent of effective Alzheimer's disease treatments.