Discussion Summary - Green

Our plain-English summary of Discussion Summary - Green, by G. Green (1973).

The study

• Author: G. Green
• Published: BIOLOGICAL EFFECTS OF ASBESTOS (J.C. WAGNER, EDITOR), LYON: IARC SCIENTIFIC PUBLICATIONS, VOLUME 8, PP. 281-282 (1973)
• 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 item is not a research study. It is a written summary of a conference discussion, published in an IARC volume on the biological effects of asbestos. It reports remarks by participants, not new research by the author. Dr Whitwell compared mesothelioma cases from Northern Ireland and Merseyside, two shipbuilding areas on opposite sides of the Irish Sea. Survival from first symptoms to death was printed as 13-14 months in the Northern Ireland series described by Prof Elmes, and 21 months in Merseyside. Of eight patients who had only pleural aspiration, four showed distant metastases at post-mortem. Of eight patients treated with surgery who came to necropsy, one did. In Merseyside, mesotheliomas in women were seen only with definite occupational exposure to asbestos dust. Participants said stricter definitions of environmental exposure were needed and that studies of dust in lungs were urgently needed. Pleural plaques were reported to carry a poor prognosis in the United Kingdom cases, but in Finland no mesotheliomas had been associated with them. The discussion attributed this to the type of asbestos fibre. The article's text is cut off before its end.

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: Discussion summary of a conference session. It reports remarks by participants, not an original study.
• Who was studied: Mesothelioma cases discussed from Northern Ireland (series described by Prof Elmes) and Merseyside, two shipbuilding areas. Total case numbers are not given. Cases from the United Kingdom and Finland were also mentioned.
• Exposure: Occupational, domestic and environmental exposure to asbestos dust, including shipyard areas and asbestos mines in South Africa. No specific fibre types are named.
• Main results:
  • Survival from first symptoms to death was printed as 13-14 months in the Northern Ireland series and 21 months in Merseyside.
  • Dr Whitwell reported that four of eight patients who had received only pleural aspiration showed distant metastases at post-mortem.
  • Of eight patients treated more actively with surgery who came to necropsy, only one had shown distant metastases.
  • In the United Kingdom cases reviewed, pleural plaques gave a poor prognosis because they were frequently followed by mesothelioma.
  • In Finland, no mesotheliomas had been associated with pleural plaques. The discussion took this as showing that the type of asbestos fibre involved was important.
  • In South Africa, dust exposure records had been computed in retrospect for about 1000 people exposed to dust on the asbestos mines.
• The authors' conclusion: Participants concluded that studies relating dose to response, based on analysis of dust in the lungs of people with various types of exposure, were urgently needed. They also concluded that post-mortem examinations should be carried out in these cases.

Topics

Medical terms in this study, explained in our Lexicon: IARC, Mesothelioma, Autopsy, Occupational Exposure, Environmental Exposure, Pleural Plaques, Prognosis.

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