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Related Experiment Videos

Pneumoencephalographic changes with intrasellar cisternal herniation (primary empty sella)

X Bajraktari, A Grepe, R K Goulatia

    Neuroradiology
    |April 18, 1977
    PubMed
    Summary

    Primary intrasellar cisternal herniation involves the third ventricle

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    Area of Science:

    • Neurosurgery
    • Neuroradiology
    • Neurology

    Background:

    • Primary intrasellar cisternal herniation is a rare condition.
    • Understanding its pathogenesis is crucial for diagnosis and treatment.

    Purpose of the Study:

    • To investigate the relationship between the third ventricle and intrasellar cisternal herniation.
    • To elucidate the mechanisms of herniation formation and associated visual field defects.

    Main Methods:

    • Analysis of pneumoencephalographic findings in 47 cases of primary intrasellar cisternal herniation.
    • Correlation of imaging findings with clinical presentation, including visual field defects.

    Main Results:

    • The anterior third ventricle's long axis consistently pointed towards the herniation center.
    • Cerebrospinal fluid (CSF) pulsations from the third ventricle are implicated in herniation development.
    • Subarachnoid air distribution suggested disturbed CSF circulation in most patients.
    • Visual field defects correlated with the third ventricle's high position, not optic nerve deformity.

    Conclusions:

    • Third ventricular CSF pulsations likely drive intrasellar herniation formation and location.
    • Disturbed CSF circulation is common in these cases.
    • High third ventricular position, not optic nerve compression, explains visual field deficits.

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