Disease possibility caused by asbestos

Our plain-English summary of Disease possibility caused by asbestos, by H. T. Planteydt (1976).

The study

• Author: H. T. Planteydt
• Published: In: Asbest und Asbestose, Colloquium 21./22.11.1975, Berlin (Leitung W. T. Ulmer); Hefte zur Unfallheilkunde, Heft 126, 39. Jahrestagung der Deutschen Gesellschaft für Unfallheilkunde, Springer Verlag Berlin-Heidelberg (1976)
• Type of article: Conference paper
• Our copy: from Johns-Manville's own medical library. The article is still under copyright, so we describe it here rather than post it.

In plain English

This short paper by H.T. Planteydt of Middelburg was given at a 1975 colloquium in Berlin on asbestos and asbestosis. It was a brief overview, not a formal study, drawing on the literature and the author's own experience. Asbestos bodies were described as proof of exposure, not of disease. Pleural plaques were described as an innocent reaction of the pleura. Asbestosis was described as a disease caused by asbestos that disables the patient and may be fatal. The author wrote that bronchial cancer in a patient with asbestosis can be considered a result of asbestos exposure. For exposed people with no clinical or radiological signs of asbestosis, the author wrote there is only statistical evidence of a link, and no definite proof for an individual patient. Mesothelioma was described as occurring in the groups at risk of asbestosis, in many other groups of workers, and after non-occupational exposure. The author cited calculations suggesting that as many as 10-15% of some of these cohorts might die from mesothelioma. The author said such risk estimates are difficult to make and that long-term studies are needed.

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: Narrative overview (conference talk) drawing on the literature and the author's own experience; not a formal study
• Who was studied: No study population. The author discussed which groups are at risk for which asbestos-related disease.
• Exposure: Asbestos in general. Occupational groups named: asbestos mines and mills, asbestos textile factories, the asbestos cement industry, other factories handling asbestos-containing products, insulators, shipyards, the building industry, waterworks and the rubber industry. In the rubber industry the exposure was to talc, at least some probably asbestiform talc or ground asbestos (chrysotile). Non-occupational exposures named: hobby work, children playing on asbestos scrapheaps, handling workers' contaminated clothes, and living near mines, mills and industries.
• Main results:
  • The author stated that asbestos bodies show only that a person was exposed to asbestos. They are not proof of asbestosis or any other asbestos-associated disease.
  • The author described pleural plaques as now considered an innocent reaction of the pleura to asbestos, with fibrosis and sometimes calcification.
  • The author described asbestosis as a disease caused by asbestos that disables the patient and may be fatal.
  • The author stated that in exposed persons with no clinical or radiological signs of asbestosis there is only statistical evidence linking asbestos to bronchial cancer. Definite proof cannot be given in an individual patient.
  • The author stated that mesothelioma occurs in the groups at risk for asbestosis and also in many other groups of workers.
  • The author stated that mesothelioma, unlike asbestosis, is also found after non-occupational exposure. Some examples were drawn from the literature and some from the author's own experience.
  • The author cited calculations suggesting that as many as 10-15% of some of these cohorts might die from mesothelioma.
• The authors' conclusion: The author concluded that risk estimates for the different exposed groups are difficult to make and that long-term studies are necessary to evaluate these risks.

Topics

Medical terms in this study, explained in our Lexicon: Asbestos Bodies, Pleural Plaques, Pleura, Asbestos Exposure, Mesothelioma, Non-Occupational Exposure.

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