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Tension pneumocephalus

P M Pop, J R Thompson, D E Zinke

    Journal of Computer Assisted Tomography
    |October 1, 1982
    PubMed
    Summary
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    Tension pneumocephalus, a serious condition of intracranial air, can cause severe neurological symptoms after head trauma or surgery. This study details its CT imaging characteristics and potential complications like subdural hematomas.

    Area of Science:

    • Neurology
    • Radiology
    • Neurosurgery

    Background:

    • Intracranial air under tension presents with severe neurological deficits.
    • It commonly follows head trauma or neurosurgical interventions.
    • Accurate diagnosis is crucial for timely management.

    Purpose of the Study:

    • To describe the computed tomography (CT) findings of tension pneumocephalus.
    • To elucidate the mechanisms behind characteristic CT appearances.
    • To discuss management strategies for tension pneumocephalus.

    Main Methods:

    • Review of sixteen patients with intracranial air under tension.
    • CT imaging in cadavers with selective air injection into intracranial compartments (epidural, subdural, subarachnoid).

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    Main Results:

    • Characteristic CT appearances of air in different intracranial spaces were identified and illustrated.
    • The "peaking" of frontal lobes in subdural tension pneumocephalus was linked to bridging veins and the superior sagittal sinus.
    • Stretching/rupturing of bridging veins may contribute to concurrent subdural hematomas.

    Conclusions:

    • CT is essential for diagnosing tension pneumocephalus and understanding its compartment-specific imaging features.
    • Bridging vein involvement explains key radiological signs and potential complications.
    • Understanding mechanisms aids in appropriate therapeutic interventions.