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Related Experiment Videos

Malignant external otitis: CT evaluation

H D Curtin, P Wolfe, M May

    Radiology
    |November 1, 1982
    PubMed
    Summary
    This summary is machine-generated.

    Malignant external otitis, a severe Pseudomonas aeruginosa infection, primarily affects elderly diabetics. Computed tomography (CT) effectively visualizes its spread and cranial nerve involvement, aiding diagnosis.

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    Area of Science:

    • Infectious Diseases
    • Radiology
    • Otolaryngology

    Background:

    • Malignant external otitis is an aggressive infection.
    • It is caused by Pseudomonas aeruginosa.
    • Elderly diabetics are the most affected demographic.

    Observation:

    • The infection spreads from the external canal to the subtemporal area and petrous apex.
    • This progression can cause multiple cranial nerve palsies.
    • Computed tomography (CT) is used for diagnosis.

    Findings:

    • CT reveals obliteration of subtemporal fat planes.
    • Patchy destruction of the mastoid bony cortex is observed.
    • CT identifies cranial nerve exit points and inflammatory mass extent, correlating with clinical findings.

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    Implications:

    • CT is crucial for demonstrating soft tissue involvement at the skull base.
    • Accurate CT assessment aids in understanding the disease's extent.
    • This imaging modality supports clinical management of malignant external otitis.