Malignant pleural mesothelioma in a young adult with no known exposure to asbestos. Can asbestos exposure be truly ruled out?

Our plain-English summary of Malignant pleural mesothelioma in a young adult with no known exposure to asbestos. Can asbestos exposure be truly ruled out?, by J. Ferrer, J. Sampol, M.J. Cruz (Archivos de Bronconeumología, 2017).

The study

• Authors: J. Ferrer, J. Sampol, M.J. Cruz
• Journal: Archivos de Bronconeumología
• Published: 2017;53(8):469
• Type of article: Letter, Comment
• Language: Spanish
• Read it: PubMed · Publisher

In plain English

This one-page Spanish letter to the editor is not a research study and reports no new data. The authors responded to a case report by Espinosa Muñoz et al. describing a young woman with malignant mesothelioma and no known asbestos exposure. Citing published series, the letter stated that in about 20% of patients asbestos exposure cannot be confirmed. It noted other suggested causes for such cases: erionite in parts of Turkey, SV-40 virus, and prior irradiation. The authors argued that unnoticed asbestos exposure should also be considered. They wrote that the case report should have recorded the absence of environmental or household exposure, such as living near fibrocement factories. Because there is no safe threshold of asbestos exposure for mesothelioma, they wrote, such exposure early in life could have caused the tumor 20 years later. They said that counting asbestos bodies in lung tissue left over from the surgical specimen, expressed per gram of dry lung tissue, would have been very informative. The authors concluded that objective evidence of exposure in doubtful cases can have clear diagnostic and medico-legal consequences.

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: Letter to the editor commenting on a previously published case report; no original data
• Who was studied: No population was studied. The letter discusses one previously published case: a young woman with malignant mesothelioma and no known asbestos exposure, reported by Espinosa Muñoz et al. in Archivos de Bronconeumología, 2016
• Exposure: No known asbestos exposure in the case discussed. The authors raise the possibility of unnoticed asbestos exposure, including environmental or household exposure such as living near fibrocement factories
• Main results:
  • Citing other published work (not data from this letter), the authors stated that in all published series about 20% of patients have asbestos exposure that cannot be confirmed
  • The letter noted causes that have been suggested for such cases: erionite exposure in some areas of Turkey, SV-40 virus, and prior irradiation
  • The authors argued that the case report should have recorded the absence of environmental or household exposure
  • Citing other published work, the authors noted that mesotheliomas have been described in people living near industries such as fibrocement factories
  • The authors stated that there is no safe threshold of asbestos exposure for mesothelioma
  • The authors argued that environmental or household exposure early in life could have caused the tumor 20 years later
  • The authors stated that analysis of the asbestos content of the surgical specimen would have been very informative
  • The authors described this technique as counting the asbestos bodies present in the lung, expressed as the number of bodies per gram of dry lung tissue
  • The authors stated that the examination is done on lung tissue left over after histological study
  • The authors stated that asbestos body counts indicate asbestos retained in the lung after inhalation, especially for the amphibole variety
  • Citing other published work, the authors stated that it is not uncommon for lung analysis to reveal asbestos exposure the patient had not noticed
• The authors' conclusion: The authors concluded that in doubtful cases, objective evidence of asbestos exposure is of interest and can have clear diagnostic and medico-legal consequences

Topics

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

Medical terms in this study, explained in our Lexicon: Pleural Mesothelioma, Asbestos Exposure.

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