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Related Experiment Videos

The impossible meningioma

J O Susac, J L Smith, F B Walsh

    Archives of Neurology
    |January 1, 1977
    PubMed
    Summary
    This summary is machine-generated.

    Small meningiomas behind the eye can cause vision loss without obvious orbital symptoms. These tumors are difficult to detect with standard imaging, often requiring surgery for diagnosis.

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    Area of Science:

    • Ophthalmology
    • Neurosurgery
    • Neuroradiology

    Background:

    • Orbital meningiomas are tumors that arise from the meninges surrounding the optic nerve.
    • Posteriorly located meningiomas can present with subtle or absent external ocular signs.

    Observation:

    • Three cases of small meningiomas in the extreme posterior orbit, anterior to the optic foramen, were identified.
    • Patients presented with progressive visual loss as the primary symptom.

    Findings:

    • Standard imaging techniques including plain skull roentgenography, polytomography, and selective angiography were insufficient for detection.
    • Computerized axial tomography (CAT) scans were also normal in one patient, delaying diagnosis.

    Implications:

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    • Early diagnosis of posterior orbital meningiomas may require advanced imaging or a high index of suspicion.
    • Exploratory craniotomy may be necessary for definitive diagnosis in challenging cases.
    • Ophthalmologists and neurosurgeons should consider these difficult-to-detect tumors in the differential diagnosis of unexplained visual loss.