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Bronchiolitis obliterans in an animal feed worker
B A Spain1, O Cummings, J G Garcia
1Department of Medicine, Indiana University School of Medicine, Indianapolis, USA.
American Journal of Industrial Medicine
|September 1, 1995
Summary
Occupational exposure to silicates in animal feed can cause irreversible lung disease, specifically bronchiolitis obliterans. This condition may not improve with standard treatments, highlighting the need for awareness in at-risk industries.
Area of Science:
- Pulmonary Medicine
- Occupational Health
- Toxicology
Background:
- Occupational lung diseases pose significant health risks.
- Animal feed industry workers face unique exposure profiles.
- Silicate exposure is a known cause of lung pathology.
Observation:
- A nonsmoking animal feed worker experienced severe, irreversible airflow obstruction.
- Pulmonary dysfunction persisted despite workplace removal and medical treatment.
- Lung biopsy revealed peribronchiolar inflammation, scarring, and neolumen formation consistent with bronchiolitis obliterans.
Findings:
- Silicate particles were identified in bronchoalveolar lavage fluid and lung biopsy specimens.
- The findings suggest a causal link between silica exposure and bronchiolitis obliterans.
- This case indicates that amorphous and synthetic silicates can induce lung disease.
Implications:
- Bronchiolitis obliterans should be considered in patients with occupational exposure to silicates in the animal feed industry.
- This case underscores the importance of recognizing and managing occupational lung diseases.
- Further research into silicate-induced lung disease in industrial settings is warranted.