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Brain abscess: a need to screen for pulmonary arteriovenous malformations

Mauro Gallitelli1, Vito Lepore, Giovanna Pasculli

  • 1Department of Internal Medicine and Public Health, Internal Medicine 'A. Murri', University of Bari, Bari, Italy.

Neuroepidemiology
|October 2, 2004
PubMed
Abstract

Insights

Pulmonary arteriovenous malformations (PAVMs) are rare but linked to brain abscess (BA) development. Many PAVMs go undiagnosed in BA patients, increasing their risk of serious complications.

Area of Science:

  • Cardiology
  • Neurology
  • Radiology

Background:

  • Pulmonary arteriovenous malformations (PAVMs) are abnormal vascular connections in the lungs, often associated with hereditary hemorrhagic telangiectasia (up to 88% of cases).
  • Patients with PAVMs face an elevated risk of developing brain abscess (BA).
  • This study investigates the prevalence of PAVMs in patients diagnosed with BA.

Purpose of the Study:

  • To determine the prevalence of undiagnosed pulmonary arteriovenous malformations (PAVMs) in patients presenting with brain abscess (BA).
  • To highlight the clinical significance of recognizing PAVMs in the context of BA to prevent potential life-threatening complications.

Main Methods:

  • Retrospective analysis of administrative hospital discharge data to identify patients diagnosed with brain abscess (BA).
  • Screening of identified BA patients for the presence of undiagnosed pulmonary arteriovenous malformations (PAVMs).

Main Results:

  • A total of 126 patients with brain abscess (BA) were identified.
  • Two patients (approximately 1.6%) were found to have undiagnosed pulmonary arteriovenous malformations (PAVMs) at the time of their BA admission.
  • The age-adjusted incidence of BA was calculated at 6.3 cases per million person-years, with a male to female ratio of 2.0.

Conclusions:

  • Pulmonary arteriovenous malformations (PAVMs), though rare, are implicated in the pathogenesis of brain abscess (BA).
  • PAVMs are frequently unrecognized in patients admitted for BA, posing significant risks.
  • Timely diagnosis and management of PAVMs are crucial for mitigating life-threatening outcomes in BA patients.

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