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[Corticobasal degeneration]

H Mizusawa1

  • 1Department of Neurology, Tokyo Medical and Dental University.

Rinsho Shinkeigaku = Clinical Neurology
|May 13, 1998
PubMed
Summary

Corticobasal degeneration (CBD) is a progressive neurological disorder typically affecting individuals in their fifties and sixties. This condition presents with asymmetric parkinsonism and cortical signs, impacting motor control and cognitive functions.

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Area of Science:

  • Neurology and Neuroscience
  • Neurodegenerative Diseases
  • Pathology

Context:

  • Corticobasal degeneration (CBD) was first described in 1967 and widely recognized after 1980s.
  • The disease typically manifests in individuals aged 50-60 years, with a duration of 6-7 years.
  • CBD shares clinical and neuropathological features with other neurodegenerative disorders like progressive supranuclear palsy and Pick's disease.

Purpose:

  • To provide a comprehensive overview of corticobasal degeneration (CBD).
  • To detail the clinical manifestations, diagnostic features, and neuropathological characteristics of CBD.
  • To highlight the diagnostic challenges posed by atypical CBD presentations.

Summary:

  • Clinical features include asymmetric parkinsonism, limb-kinetic apraxia, alien limb syndrome, and dementia.
  • Neuroimaging (MRI, SPECT, PET) shows asymmetric frontal-parietal atrophy or hypometabolism.
  • Neuropathology is characterized by neuronal achromasia, ballooned neurons, and tau-positive inclusions in affected cortical and subcortical areas.

Impact:

  • Understanding CBD's distinct clinical and pathological features aids in differential diagnosis from similar neurodegenerative conditions.
  • Highlights the need for further research into the etiology and pathomechanisms of CBD.
  • Emphasizes the importance of recognizing both typical and atypical presentations for accurate diagnosis and patient management.

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