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[Opercular aplasia (author's transl)].

E Markakis, R Heyer, L Stoeppler

    Neurochirurgia
    |November 1, 1979
    PubMed
    Summary
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    Opercular aplasia, a rare condition affecting brain development, is often linked to arachnoid cysts and predominantly occurs in males on the left side. Trauma can worsen symptoms, sometimes revealing subdural hematomas during surgery.

    Area of Science:

    • Neurology
    • Neuroscience
    • Developmental Biology

    Context:

    • Opercular aplasia is a rare congenital condition affecting specific brain regions.
    • This study examines 11 cases, detailing patient demographics and associated pathologies.
    • The condition involves underdevelopment of the frontal and temporal opercula.

    Purpose:

    • To describe the clinical and radiological features of opercular aplasia.
    • To investigate the association between opercular aplasia, arachnoid cysts, and cerebrocranial trauma.
    • To outline current surgical and non-surgical management strategies.

    Summary:

    • Eleven patients (5-44 years) with opercular aplasia were studied, predominantly males (91%) with left-sided aplasia (91%).
    • Aplasia was more severe in the frontal than temporal operculum and consistently associated with space-occupying arachnoid cysts, basal CSF flow obstruction, and symphyses.

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  • Patients often decompensated after head trauma, with surgery revealing subdural hematomas in some cases due to venous detachment.

    • Impact:

    • Highlights the strong association between opercular aplasia and arachnoid cysts.
    • Provides insights into the potential complications, such as subdural hematomas following trauma.
    • Informs clinical decision-making regarding surgical intervention versus conservative management with monitoring.