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Subdural hygromas in abusive head trauma: pathogenesis, diagnosis, and forensic implications
D Wittschieber1, B Karger2, T Niederstadt3
1From the Departments of Forensic Medicine (D.W., B.K., H.P.) daniel.wittschieber@ukmuenster.de.
AJNR. American Journal of Neuroradiology
|June 21, 2014
Summary
Subdural hygromas in infants can indicate abusive head trauma. Differentiating them from other conditions requires careful imaging analysis, often including MRI after initial CT scans.
Area of Science:
- Pediatric Neuroradiology
- Forensic Medicine
- Child Abuse Diagnosis
Background:
- Subdural hygromas are a significant finding in infant head trauma.
- Accurate diagnosis is crucial for identifying abusive head trauma (AHT).
- Understanding pathogenesis aids neuroradiologists, pediatricians, and forensic physicians.
Purpose of the Study:
- To summarize current knowledge on subdural hygromas.
- To provide forensic conclusions regarding their association with AHT.
- To discuss diagnostic pitfalls and differentiate from similar conditions.
Main Methods:
- Literature analysis on subdural hygromas and AHT.
- Review of diagnostic tools like CT and MR imaging.
- Presentation of illustrative cases from forensic practice.
Main Results:
- Subdural hygromas can be immediate or delayed findings.
- Excluding other causes, subdural hygromas strongly suggest a posttraumatic state.
- Benign enlargement of the subarachnoid space and chronic subdural hematoma are key differential diagnoses.
Conclusions:
- Subdural hygromas, when other causes are excluded, are highly indicative of abusive head trauma.
- Initial CT scans should be followed by MR imaging for definitive diagnosis.
- These findings necessitate a thorough search for other signs of abuse.
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