Fibrosis of the lungs due to the inhalation of asbestos dust

Our plain-English summary of Fibrosis of the lungs due to the inhalation of asbestos dust, by W.E. Cooke (British Medical Journal, 1924).

The study

• Author: W.E. Cooke
• Journal: British Medical Journal
• Published: 1924;2(3317):147-140.2
• Cited by: 98 articles, as counted by NIH iCite
• Read it: PubMed · Publisher · Free full text

Summary of the article

The author, pathologist at Wigan Infirmary, reported a fatal case of lung fibrosis that he described as the first in English medical literature to be definitely proved as due to asbestos dust. He noted that doctors in asbestos-manufacturing areas had long suspected the dust of causing chronic bronchitis and fibrosis, and that Professor J. M. Beattie had shown the dust causes fibrosis in guinea-pigs. The patient was a woman aged 33 who had worked in asbestos factories from the age of 13. Her attendance had been intermittent for five years before she stopped work in July 1922, and she died on March 15th, 1924. The Rochdale coroner sent her lungs for further examination. An x-ray plate showed extensive fibrosis, more marked in the right lung, and calcareous glands at the root of the left lung. At examination, both lungs had thickened pleura with adhesions. The right lung was small, firm, fibrosed and largely airless, with a large apical cavity, areas of caseation and dilated bronchi. The left lung showed similar but less marked changes, with calcified tuberculous glands and a walnut-sized cavity. Under the microscope there was extensive fibrosis, caseous foci and giant cells, and tubercle bacilli were present. Mineral particles, mostly sharp-angled and measuring 393.6 to 3 microns in length, were seen in both caseous and fibrotic areas. The author compared these with photomicrographs of asbestos dust.

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 1924 article was a case report by a pathologist at Wigan Infirmary describing the lungs of one woman. She was 33, had worked in asbestos factories since the age of 13, attended only intermittently in her last five years of work, stopped working in July 1922, and died on March 15th, 1924. The coroner for Rochdale sent her lungs for further examination. An x-ray showed extensive fibrosis (scarring), more marked in the right lung. Both lungs had thickened pleura with adhesions, along with fibrosis and cavities. The right lung was largely airless, its tissue replaced by fibrous tissue. Under the microscope there were caseous areas, giant cells and tubercle bacilli, and the author described calcified tuberculous glands, so tuberculosis was also present. Particles of mineral matter, mostly sharp-angled, were seen in the fibrotic and caseous areas. The author did not name a type of asbestos fiber. The author presented the case as the first in English medical literature to be definitely proved. The title attributed the lung fibrosis to inhaled asbestos dust.

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: case report (examination of one person's lungs after death, with x-ray and microscopy)
• Who was studied: one woman, aged 33, who had worked in asbestos factories since age 13. She stopped work in July 1922 and died March 15th, 1924. Her lungs were sent for examination by the coroner for Rochdale.
• Exposure: work in asbestos factories from age 13, with intermittent attendance in the five years before she stopped work. No fiber type, specific job or dose is given.
• Main results:
  • An x-ray showed extensive fibrosis, more marked in the right lung.
  • Right lung: the pleura was thickened over the entire surface, with remains of dense adhesions. The lung was fibrosed and largely airless, with a large cavity at the apex and areas of caseation.
  • Left lung: the same condition as the right lung, but the fibrosis was less extensive. There were calcified tuberculous glands at the root of the lung.
  • Microscopy found giant cells around caseous areas, and tubercle bacilli were present.
  • Particles of mineral matter, mostly with sharp angles, were seen in the caseous and fibrotic parts of both lungs. The size was printed as varying from 393.6 to 3 microns in length.
  • The bronchi were dilated, with extensive peribronchial fibrosis.
• The authors' conclusion: The author presented the case as the first in English medical literature to be definitely proved. The title attributes the lung fibrosis to the inhalation of asbestos dust. There is no separate conclusion section.

Topics

Medical terms in this study, explained in our Lexicon: Fibrosis, Pleura, Bronchus.

Related studies

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• Osteopontin modulates inflammation, mucin production, and gene expression signatures after inhalation of asbestos in a murine model of fibrosis — T. Sabo-Attwood, M.E. Ramos-Nino, et al. (2011)
• Dose-responsive increases in pulmonary fibrosis after inhalation of asbestos — T.R. Quinlan, J.P. Marsh, et al. (1994)
• Massive pulmonary fibrosis from the inhalation of talc — A.C. Hunt (1956)
• Characterization of the lower respiratory tract inflammation of nonsmoking individuals with interstitial lung disease associated with chronic inhalation of inorganic dusts — W.N. Rom, P.B. Bitterman, et al. (1987)
• Human exposure to asbestos: dust controls and standards. The inhalation of fibrous dusts — V. Timbrell (1965)

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