Detailed occupational history: the cornerstone in diagnosis of asbestos-related lung disease

Our plain-English summary of Detailed occupational history: the cornerstone in diagnosis of asbestos-related lung disease, by R. Bégin, J.W. Christman (American Journal of Respiratory and Critical Care Medicine, 2001).

The study

• Authors: R. Bégin, J.W. Christman
• Journal: American Journal of Respiratory and Critical Care Medicine
• Published: 2001;163(3 Pt 1):598-9
• Type of article: Comment, Editorial
• Cited by: 17 articles, as counted by NIH iCite
• Read it: PubMed · Publisher

Summary of the article

This editorial commented on a study by Van Cleemput and colleagues published in the same issue. The authors noted that the dust burden in the lungs of exposed people cannot be measured directly and is best assessed, indirectly, by a detailed occupational history. They stated that bronchoalveolar lavage measurements of dust were less useful in asbestosis than in silicosis, and that high-resolution CT, though sensitive, was not yet a gold standard because an exposure–response relationship had not been clearly established. Van Cleemput and colleagues had used CT scanning to measure the surface area of localized pleural plaques in a group of asbestos workers and compared it with cumulative exposure calculated from workplace dust measurements. The editorialists highlighted the finding that plaque size and surface area did not correlate with the cumulative asbestos exposure index, the cumulative cigarette smoke exposure index, or lung function. They noted that pleural plaques without asbestosis have been associated with a 1.4-fold increased risk of lung carcinoma. They concluded that plaque extent should not be used as an index of cumulative asbestos exposure, although plaques remain a useful surrogate for past exposure. The gold standard remains the detailed work history. When that history is unclear, lung mineral fibre content, which requires an open lung biopsy, can help. They stated that the presence of asbestosis suggests cumulative exposure above 25 fibre·yr/cm3, but its absence does not establish lower exposure.

PubMed has no abstract for this study, and the article doesn't print one. We wrote this summary from the full article with the help of AI. It is not the authors' wording.

In plain English

This is an editorial, not a research study, and reports no new data. The authors commented on a study by Van Cleemput and colleagues in the same journal issue, which used CT scanning to measure localized pleural plaques in a group of asbestos workers. According to the editorial, that study found that plaque size and surface did not correlate with a cumulative asbestos exposure index or a cumulative cigarette smoke exposure index, and that the total plaque surface did not correlate with lung function values. The editorial cited an earlier study linking pleural plaques without asbestosis to a 1.4-fold increased lung carcinoma risk. The authors argued that asbestosis suggests cumulative exposure above 25 fiber-years per cubic centimetre, but its absence does not show exposure was lower, and that lung fiber content from an open lung biopsy can help when exposure is uncertain. The authors concluded that plaque size should not be used to gauge past exposure, though plaques remain a useful surrogate for it, and that a detailed work history remains the gold standard.

We wrote this plain-English summary from the full article with the help of AI, and a second AI model checked each sentence against the article. It is not the authors' wording; the abstract and the article are their own account.

What the study did and found

• Design: Editorial commentary on another study published in the same journal issue (Van Cleemput et al.); no original data
• Who was studied: No study population of its own; the editorial discusses the Van Cleemput study of a group of asbestos workers
• Exposure: Occupational asbestos exposure, expressed in the discussed study as a cumulative asbestos exposure index (fiber types not specified)
• Main results:
  • The editorial reported that the Van Cleemput study found that the size and surface of pleural plaques did not correlate with the cumulative asbestos exposure index or the cumulative cigarette smoke exposure index
  • The editorial reported that the Van Cleemput study found no correlation between the total surface of localized pleural plaques and lung function values
  • Citing an earlier study (Hillerdal, 1994), the editorial stated that pleural plaques without asbestosis are associated with a 1.4-fold increased risk of lung carcinoma
  • The authors argued that asbestosis suggests cumulative exposure above the generally accepted threshold of 25 fiber-years per cubic centimetre, but that its absence does not establish exposure below that level
  • The authors stated that when exposure is uncertain, lung mineral fiber content, which requires an open lung biopsy, can be a useful indicator of past asbestos exposure
• The authors' conclusion: The authors concluded that pleural plaque size should not be used as an indicator of past asbestos exposure, though plaques remain a useful surrogate for past exposure, and that the detailed past work history remains the gold standard

Topics

The National Library of Medicine indexes this study under subjects our site covers: Asbestosis.

Medical terms in this study, explained in our Lexicon: Occupational History, Bronchoalveolar Lavage (BAL), Silicosis, High-Resolution CT (HRCT), Pleural Plaques, Cumulative Exposure, Asbestos Exposure, Carcinoma.

Related studies

• The hazards of asbestos. Detailed occupational history is vital — A. Seaton (1993)
• The environmental history in pediatric practice: a study of pediatricians' attitudes, beliefs, and practices — N. Kilpatrick, H. Frumkin, et al. (2002)
• Family history of cancer and risk of paediatric and young adult's testicular cancer: A Norwegian cohort study — R. Del Risco Kollerud, E. Ruud, et al. (2019)
• Case Report: Early diagnosis and bevacizumab-based chemotherapy for primary pericardial mesothelioma: a case with occupational asbestos exposure history — D. Wang, Y.H. Wang, et al. (2023)
• Clinical study of asbestos-related lung cancer in Japan with special reference to occupational history — T. Kishimoto, K. Gemba, et al. (2010)
• History of asbestos related disease — P.W. Bartrip (2004)

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