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Brain trauma: cause-consequence connection problems

G Stojiljkovic1, M Tasic, B Budakov

  • 1Institute of Forensic Medicine, Yugoslavia.

Medicine and Law
|October 3, 1998
PubMed
Summary
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Diffuse axonal injury in the central nervous system (CNS) can be difficult to diagnose, even with advanced imaging. Microscopic analysis of myelin in brain stem tissue reveals significant differences in patients with brain trauma, aiding in unexplained death investigations.

Area of Science:

  • Neurology
  • Forensic Pathology
  • Neuroscience

Background:

  • Diagnosing serious central nervous system (CNS) injuries, like diffuse axonal lesions and demyelination, poses challenges despite advanced imaging techniques such as computerized tomography.
  • These lesions, termed "syndrome of the patient who talks and dies," often present with subtle or absent clinical signs, complicating the explanation of sudden, unexplained deaths.

Purpose of the Study:

  • To investigate microscopic changes in myelin within the brain stem of patients with brain trauma.
  • To establish objective histological criteria for diagnosing diffuse axonal lesions and demyelination in forensic investigations.

Main Methods:

  • Histological and microscopic analysis of brain stem tissue specimens from patients with brain trauma and a control group.
  • Quantitative assessment of myelin surface area using Hematoxylin and Eosin (HE) and Gomory's staining techniques.

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  • Statistical analysis to determine the significance of observed differences (95% probability, P < 0.05).

    • Main Results:

    • A statistically significant reduction in the percentage of myelin surface area was observed in the brain trauma group compared to the control group.
    • HE technique showed a myelin surface percentage of 16.12% in the test group versus 38.62% in controls.
    • Gomory's method revealed a myelin surface percentage of 13% in the test group compared to 33.46% in controls.

    Conclusions:

    • Microscopic myelin analysis provides objective evidence for diffuse axonal lesions and demyelination in brain trauma cases.
    • These histological findings can assist legal authorities in making more objective determinations in cases of sudden, unexplained death.
    • The study highlights the importance of microscopic examination in diagnosing subtle but critical neuropathological changes.