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Cerebral abscess

Last edited: 4/16/2026

Overview

Cerebral abscess refers to a localized infection within the brain parenchyma, often caused by pyogenic bacteria, fungi, or, as seen in 1, Listeria monocytogenes, particularly in immunocompromised patients. Early diagnosis and intervention are crucial for favorable outcomes.

Diagnosis

  • Imaging: Cerebral scan (CT or MRI) essential for early diagnosis and localization 1.
  • CSF Analysis: Lumbar puncture may reveal signs of infection but is contraindicated if increased intracranial pressure is suspected.
  • Microbiological Confirmation: Cultures from abscess aspirates or blood are critical for identifying the causative organism 1.
  • Neurological Examination: Assess for focal deficits, altered mental status, and signs of increased intracranial pressure.

    • Management

  • Surgical Intervention: Early neurosurgical drainage or excision of the abscess when feasible 1.
  • Antibiotics: Initiate broad-spectrum antibiotics, narrowing spectrum based on culture results; specific coverage for Listeria may include ampicillin or meropenem 1.
  • Duration of Therapy: Typically 4-6 weeks, adjusted based on clinical response and imaging 1.
  • Supportive Care: Manage intracranial pressure, seizures, and other complications as they arise.

    • Special Populations

  • Immunocompromised Patients: Increased susceptibility to Listeria-induced cerebral abscesses; tailored immunosuppressive management crucial 1.

    • Key Recommendations

  • Utilize cerebral imaging (CT/MRI) for early diagnosis of cerebral abscess 1 (Evidence: Strong).
  • Perform microbiological confirmation through abscess aspirate or blood cultures 1 (Evidence: Strong).
  • Consider early neurosurgical intervention for abscess drainage 1 (Evidence: Moderate).

    • References

    1 Crocker EF, Leicester J. Cerebral abscess due to Listeria monocytogenes. The Medical journal of Australia 1976. link

    Original source

    1. [1]
      Cerebral abscess due to Listeria monocytogenes. — Crocker EF, Leicester J The Medical journal of Australia (1976)
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