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Fungal aneurysms of intracranial vessels

B C Horten, G F Abbott, R S Porro

    Archives of Neurology
    |August 1, 1976
    PubMed

    Insights

    Intracranial fungal aneurysms, often caused by Aspergillus, develop in cerebral arteries. These dangerous conditions frequently lead to brain damage and rupture due to fungal invasion.

    Area of Science:

    • Neurology
    • Infectious Diseases
    • Vascular Medicine

    Background:

    • Intracranial fungal aneurysms are rare but severe vascular complications.
    • They originate from major cerebral arteries, posing a significant risk of rupture.
    • Understanding the pathogenesis is crucial for diagnosis and treatment.

    Observation:

    • Fungal invasion occurs directly into vessel walls via fungal emboli or from fungal meningitis.
    • The vasa vasorum, supplying the vessel wall, remain unaffected by fungal presence.
    • Extensive hemorrhagic necrosis of adjacent brain tissue is a common finding.

    Findings:

    • Aspergillus species are the most frequent causative agents of intracranial fungal aneurysms.
    • Common sources for Aspergillus include nasal sinusitis and endocarditis.
    • Aneurysmal rupture is a frequent and devastating complication.

    Implications:

    • Early diagnosis and intervention are critical to prevent catastrophic rupture.
    • Identifying the source of fungal infection (e.g., sinusitis, endocarditis) is key for effective management.
    • This highlights the importance of considering fungal infections in patients with unexplained aneurysms and neurological deficits.

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