Cerebral amyloid angiopathy-related inflammation: an emerging disease

M Savoiardo1, A Erbetta, J C Di Francesco

  • 1Department of Neuroradiology, IRCCS Foundation C. Besta Neurological Institute; Milan, Italy - msavoiardo@istituto-besta.it.

The Neuroradiology Journal
|September 25, 2013
PubMed

Insights

Cerebral amyloid angiopathy-related inflammation (CAA-ri) was diagnosed in three elderly patients using MRI to detect microbleeds and APOE genotyping. Steroid treatment led to lesion disappearance and clinical improvement, suggesting a non-invasive diagnostic approach.

Area of Science:

  • Neurology
  • Radiology
  • Genetics

Background:

  • Cerebral amyloid angiopathy-related inflammation (CAA-ri) presents diagnostic challenges.
  • Early diagnosis is crucial for effective management.

Purpose of the Study:

  • To evaluate the utility of MRI and APOE genotyping in diagnosing CAA-ri.
  • To assess the efficacy of steroid treatment for CAA-ri.

Main Methods:

  • Case observation of three elderly patients with neurological deficits.
  • Magnetic Resonance Imaging (MRI) to identify white matter edema and microbleeds.
  • Genetic analysis of APOE genotypes.

Main Results:

  • MRI revealed white matter edema and microbleeds consistent with cerebral amyloid angiopathy (CAA).
  • Genetic analysis showed APOE ε4/ε4 genotype in patients with inflammatory changes.
  • Steroid treatment resulted in complete lesion resolution and clinical improvement.

Conclusions:

  • MRI-detected microbleeds, supported by APOE ε4/ε4 genotyping, strongly suggest CAA-ri.
  • This approach may obviate the need for invasive cerebral biopsy.
  • Steroids are an effective treatment for CAA-ri.

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