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Imaging-pathologic correlation in corticobasal degeneration.

A M Tokumaru1, Y Saito, S Murayama

  • 1Department of Diagnostic Radiology, Tokyo Metropolitan Medical Center of Gerontology, Itabashi-Ku, Tokyo, Japan. tokumaru@tmghig.jp

AJNR. American Journal of Neuroradiology
|October 17, 2009
PubMed
Summary
This summary is machine-generated.

Diagnosing corticobasal degeneration (CBD) is challenging. MRI findings like white matter lesions and asymmetric atrophy aid in differentiating CBD from progressive supranuclear palsy (PSP).

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Area of Science:

  • Neuroimaging
  • Neuropathology
  • Neurodegenerative Diseases

Background:

  • Clinical diagnosis of corticobasal degeneration (CBD) is difficult due to varied presentations.
  • Neuropathologically confirmed CBD cases were analyzed for characteristic imaging findings.
  • Imaging findings in CBD were compared with progressive supranuclear palsy (PSP) for differential diagnosis.

Purpose of the Study:

  • To evaluate characteristic MRI findings in neuropathologically confirmed CBD.
  • To correlate imaging findings with neuropathologic features in CBD.
  • To differentiate CBD from PSP using MRI.

Main Methods:

  • Retrospective analysis of 4 neuropathologically confirmed CBD cases.
  • MR imaging evaluated midbrain tegmentum area, subcortical white matter (SCWM) abnormality, asymmetric cerebral atrophy, and subthalamic nuclei signal intensity.
  • CBD MRI findings were compared with 13 neuropathologically confirmed PSP cases.

Main Results:

  • Asymmetric cerebral atrophy was observed in 3 CBD patients.
  • Marked midbrain tegmentum atrophy was noted in CBD, with no significant difference from PSP.
  • SCWM abnormalities were present in all CBD patients, unlike PSP; subthalamic nuclei degeneration was more severe in PSP.

Conclusions:

  • Distinguishing CBD from PSP based solely on midbrain tegmentum atrophy and subthalamic nuclei signal intensity on MRI is difficult.
  • White matter lesions and asymmetric atrophy are valuable indicators for differentiating CBD from PSP.
  • MRI, combined with clinical and pathological data, is crucial for accurate diagnosis.