Bronchiolitis obliterans syndrome in popcorn production plant workers

The European Respiratory Journal
M Akpinar-ElciK Kreiss

Abstract

Following sentinel case recognition, an excess of fixed airways obstruction was found among current workers in a microwave popcorn plant associated with butter flavouring exposures. In order to characterise the clinical presentation of sentinel cases, the medical records of sentinel cases were reviewed, interviews conducted and serial spirometric testing performed. Cases worked in microwave popcorn production, and five of the nine cases had mixed flavourings. Most had never smoked or smoked minimally. Cases showed onset of cough, shortness of breath and wheezing 5 months to 9 yrs after starting work at the popcorn plant. Initial forced expiratory volume in one second ranged 14.0-66.8% of the predicted value. Eight high-resolution computed tomography scans showed marked bronchial wall thickening and mosaic attenuation with air trapping. Open lung biopsy results were consistent with, or diagnostic of, constrictive bronchiolitis in two of three cases. Five cases are on lung transplantation waiting lists. After leaving employment, nearly all cases experienced stabilisation of their lung function within 2 yrs. Astute clinicians can help identify new causes of airways obstruction by alerting public health authorities to unexplained d...Continue Reading

Citations

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