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Necrotizing ("malignant") external otitis histopathologic processes.

R I Kohut, J R Lindsay

    The Annals of Otology, Rhinology, and Laryngology
    |September 1, 1979
    PubMed
    Summary
    This summary is machine-generated.

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    Necrotizing external otitis can spread to the brain via bone necrosis, forming abscesses. The infection may appear controlled locally while progressing internally, highlighting a critical diagnostic challenge.

    Area of Science:

    • Otolaryngology
    • Neurology
    • Pathology

    Background:

    • Malignant (necrotizing) external otitis is a severe infection of the ear canal.
    • Brain abscesses can be a rare but serious complication.

    Observation:

    • Histologic examination of a temporal bone revealed invasion patterns.
    • The infection spread through local bone necrosis to submucosal vasculature.

    Findings:

    • Necrotizing external otitis caused bone destruction and submucosal spread.
    • Pseudomonas brain abscesses developed, with evidence of new bone formation potentially obscuring the initial spread site.

    Implications:

    • The findings illustrate a unique mechanism of central nervous system invasion by Pseudomonas.

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  • Apparent local disease control can mask ongoing intracranial infection, posing a diagnostic challenge.