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Acute subdural hematoma and diffuse axonal injury after severe head trauma
J Sahuquillo-Barris1, J Lamarca-Ciuro, J Vilalta-Castan
1Department of Neurosurgery, Ciudad Sanitaria Valle de Hebrón, Barcelona, Spain.
Journal of Neurosurgery
|June 1, 1988
Summary
Acute subdural hematoma (SDH) may be secondary to diffuse axonal injury (DAI) in severe head trauma. The severity of underlying DAI, not SDH, dictates patient outcomes.
Area of Science:
- Neuroscience
- Neuropathology
- Trauma Surgery
Background:
- The relationship between acute subdural hematoma (SDH) and diffuse axonal injury (DAI) is understudied.
- SDH is often considered a primary indicator of severe head injury.
Purpose of the Study:
- To investigate clinicopathological findings in fatal head injuries where acute SDH was the predominant computerized tomography (CT) finding.
- To determine if SDH can be an epiphenomenon of underlying DAI.
Main Methods:
- Retrospective analysis of six fatal head injury cases from road traffic accidents.
- Review of CT scans, postmortem examinations, and histological findings, including intracranial hypertension and axonal injury markers.
Main Results:
- All patients exhibited diffuse axonal injury, with axonal retraction balls found throughout the white matter.
- Intracranial hypertension was histologically confirmed in all cases.
- In three cases, macroscopic lesions were observed in the corpus callosum, suggesting DAI.
Conclusions:
- Acute SDH may be a secondary finding, an epiphenomenon, in cases of severe diffuse axonal injury.
- The ultimate patient outcome is primarily determined by the severity of the underlying DAI, not the SDH itself.