Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2015 Dec;11(12):1480-1488.
doi: 10.1016/j.jalz.2015.04.009. Epub 2015 Jun 13.

Diagnostic value of lobar microbleeds in individuals without intracerebral hemorrhage

Affiliations

Diagnostic value of lobar microbleeds in individuals without intracerebral hemorrhage

Sergi Martinez-Ramirez et al. Alzheimers Dement. 2015 Dec.

Abstract

Introduction: The Boston criteria are the basis for a noninvasive diagnosis of cerebral amyloid angiopathy (CAA) in the setting of lobar intracerebral hemorrhage (ICH). We assessed the accuracy of these criteria in individuals with lobar microbleeds (MBs) without ICH.

Methods: We identified individuals aged >55 years having brain magnetic resonance imaging (MRI) and pathological assessment of CAA in a single academic hospital and a community-based population (Framingham Heart Study [FHS]). We determined the positive predictive value (PPV) of the Boston criteria for CAA in both cohorts, using lobar MBs as the only hemorrhagic lesion to fulfill the criteria.

Results: We included 102 individuals: 55 from the hospital-based cohort and 47 from FHS (mean age at MRI 74.7 ± 8.5 and 83.4 ± 10.9 years; CAA prevalence 60% and 46.8%; cases with any lobar MB 49% and 21.3%; and cases with ≥2 strictly lobar MBs 29.1% and 8.5%, respectively). PPV of "probable CAA" (≥2 strictly lobar MBs) was 87.5% (95% confidence interval [CI], 60.4-97.8) and 25% (95% CI, 13.2-78) in hospital and general populations, respectively.

Discussion: Strictly lobar MBs strongly predict CAA in non-ICH individuals when found in a hospital context. However, their diagnostic accuracy in the general population appears limited.

Keywords: Boston criteria; Cerebral amyloid angiopathy; Intracerebral hemorrhage; Likelihood ratio; Microbleed; Predictive value; Sensitivity; Specificity.

PubMed Disclaimer

Figures

Figure 1
Figure 1
Inclusion/exclusion workflow for hospital-based cases

Comment in

References

    1. Pantelakis S. [A particular type of senile angiopathy of the central nervous system: congophilic angiopathy, topography and frequency] Monatsschr Psychiatr Neurol. 1954;128:219–256. - PubMed
    1. Okazaki H, Reagan TJ, Campbell RJ. Clinicopathologic studies of primary cerebral amyloid angiopathy. Mayo Clin Proc. 1979;54:22–31. - PubMed
    1. Vinters HV. Cerebral amyloid angiopathy. A critical review. Stroke; a journal of cerebral circulation. 1987;18:311–324. - PubMed
    1. Knudsen KA, Rosand J, Karluk D, Greenberg SM. Clinical diagnosis of cerebral amyloid angiopathy: validation of the Boston criteria. Neurology. 2001;56:537–539. - PubMed
    1. Ishihara T, Takahashi M, Yokota T, et al. The significance of cerebrovascular amyloid in the aetiology of superficial (lobar) cerebral haemorrhage and its incidence in the elderly population. J Pathol. 1991;165:229–234. - PubMed

Publication types