Bronchiolitis in a patient with talcosis

Our plain-English summary of Bronchiolitis in a patient with talcosis, by K. Reijula, P. Pääkkö, R. Kerttula, et al (British Journal of Industrial Medicine, 1991).

The study

• Authors: K. Reijula, P. Pääkkö, R. Kerttula, O. Taikina-Aho, T. Tuuponen, J. Hassi
• Journal: British Journal of Industrial Medicine
• Published: 1991;48(2):140-2
• Type of article: Case report
• Cited by: 1 article, as counted by NIH iCite
• Read it: PubMed · Publisher · Free full text
• In J-M's library: Johns-Manville's company medical library held a copy (J-M no. 003934).

In plain English

This case report from Finland described a 43 year old talc mine loader who drove a tractor and had worked as a talc loader since 1960. The mine's talc occurred in plate and granular forms, not in fibrous form. Dust inside his tractor measured 86 mg/m3 in 1976, after which dust filters were installed. He had smoked 20 cigarettes a day for 21 years. He had cough, phlegm and breathlessness, and lung tests showed a restrictive defect and reduced diffusing capacity. At two later visits a bronchodilator (salbutamol) improved FEV1, a measure of airflow, by 30% and by 20%. A week of prednisolone did not help. An open lung biopsy in May 1984 showed lymphocytic inflammation in the lining of most small airways (bronchiolitis), a few granulomas, slight fibrosis and talc particles. No silica or asbestos was detected. The authors said bronchiolitis had not been shown before in talcosis and might partly explain his airflow obstruction. They noted that his heavy smoking made the onset of talc-related symptoms hard to judge. They said further studies are needed to know whether this occurs generally in workers exposed to talc 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 of a single patient
• Who was studied: One 43 year old male talc mine loader who operated a tractor and had worked as a talc loader since 1960. He was examined at a chest hospital in Finland, with clinical data recorded from November 1982 to February 1986. He had smoked 20 cigarettes a day for 21 years.
• Exposure: Talc dust in plate and granular forms, not fibrous. Total dust inside the tractor was 86 mg/m3 in 1976, after which dust filters were installed. A lower 1986 figure is unclear in the scanned text. He used paper masks only occasionally.
• Main results:
  • Lung function tests showed a restrictive ventilatory defect and decreased diffusing capacity. The first chest x ray showed no abnormalities.
  • FEV1 improved by 30% after salbutamol at the third examination, and by 20% with bronchodilator treatment at a later presentation. One week of prednisolone produced no improvement in symptoms or lung function.
  • The open lung biopsy showed lymphocytic infiltration of the lining of most non-respiratory and respiratory bronchioles. It also showed a few interstitial epithelioid cell granulomas, slight interstitial fibrosis and birefringent crystals. The histological picture suggested talcosis.
  • Electron microscopy found particles with a spectrum typical of talc in lung macrophages. No silica or asbestos was detected in the lungs.
• The authors' conclusion: The authors concluded that bronchiolitis had not previously been shown in talcosis, and that the obstructive ventilatory defect may be partly explained by bronchiolitis in this case.
• Limitations the authors state:
  • The patient's heavy smoking made it difficult to estimate when talc-related symptoms began, and it explains some symptoms suggesting chronic bronchitis.
  • This is one patient. Further studies are needed to know whether the bronchiolitis is a general phenomenon in talc-exposed workers.

Topics

The National Library of Medicine indexes this study under subjects our site covers: Talc and vermiculite.

Related studies

• Commercial talc and talcosis — B. Weiss, E.A. Boettner (1967)
• Particle size for differentiation between inhalation and injection pulmonary talcosis — J.L. Abraham, C. Brambilla (1980)
• Pulmonary ventilatory function in talcosis of lung — M. Kleinfeld, J. Messite, et al. (1964)
• Mixed pneumoconiosis: silicosis, asbestosis, talcosis, and berylliosis — G.J. Mark, C.B. Monroe, et al. (1979)
• A case of lung adenocarcinoma complicated by pulmonary talcosis occurring in a patient employed in the confectionery industry — K. Kobayashi, N. Watanabe, et al. (2019)
• The dust hazard in tremolite talc mining — L. Greenburg (1947)

Browse more research in British Journal of Industrial Medicine, or return to medical research.