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Asbestos body burden in decomposed human lungs
F Mollo1, M Cravello, A Andreozzi
1Department of Biomedical Sciences and Human Oncology, University of Turin, Italy.
The American Journal of Forensic Medicine and Pathology
|June 28, 2000
Summary
Postmortem tissue decomposition significantly reduces asbestos body (AB) counts in lungs. This degradation can lead to false-negative results in medicolegal autopsies, impacting asbestos-related pathology assessments.
Area of Science:
- Forensic Pathology
- Occupational Health
- Toxicology
Background:
- Asbestos exposure is linked to serious lung diseases.
- Accurate asbestos body (AB) quantification in lung tissue is crucial for diagnosing asbestos-related pathologies.
- Medicolegal autopsies often involve delayed tissue analysis due to decomposition.
Purpose of the Study:
- To investigate the impact of postmortem decomposition on lung asbestos body (AB) burden.
- To evaluate the reliability of AB data from autopsies performed months after death.
- To assess the implications for medicolegal investigations of asbestos-related diseases.
Main Methods:
- Eight autopsy cases with probable occupational asbestos exposure were selected.
- Asbestos body (AB) concentrations were measured in lung tissue shortly after death.
- Subsequent AB measurements were performed on lung tissue stored for 1 to 18 months without fixation.
Main Results:
- A consistent decrease in asbestos body (AB) concentrations was observed over time in decomposing lungs.
- Some samples showed negative AB counts within months, even with initially high concentrations.
- Tissue degradation significantly affects the accuracy of AB quantification.
Conclusions:
- Postmortem decomposition substantially degrades lung asbestos bodies (ABs).
- Delayed analysis of decomposed lung tissue can yield false-negative results for ABs.
- This challenges the reliability of medicolegal assessments for asbestos-related pathology in exhumed remains.