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Revista chilena de enfermedades respiratorias

On-line version ISSN 0717-7348


DELGADO G., Diemen et al. Pleural plaques by inhalation of asbestos fibers. Report of two cases and literature review. Rev. chil. enferm. respir. [online]. 2020, vol.36, n.3, pp.204-210. ISSN 0717-7348.


Asbestos fiber pleural plaque is characterized by lesions composed of fibrous tissue that are located in the parietal pleura. They usually appear in up to 3 to 58% of workers who were exposed to asbestos fiber, and 0.5 to 8% in the general population. The objective of this article is to present two clinical cases of patients who were detected in the chest radiograph pleural alterations associated with exposure to asbestos fibers.

Clinical Cases:

First case: 49-year-old male patient, building worker with a history of exposure to asbestos fibers. Focal pleural alterations were detected by a chest x-ray performed according ILO (International Labour Organization) technique. The presence of pleural plaques was confirmed in a computed tomography of the chest. Second case: Holder, without occupational exposure to asbestos fibers. An anteroposterior chest radiography showed the presence of focal pleural plaque in a CT scan of the chest.


Chest x-ray with ILO technique is the basic instrument for the identification of diseases related to asbestos fiber exposure. The study should be completed with a CT scan of the chest whose sensitivity is greater, allowing early detection of pleural abnormalities. Detailed occupational history is essential, as it is the most reliable and practical method to measure asbestos fiber exposure.

Keywords : Asbestos; Pleural diseases; occupational exposures; Radiography; Tomography, XRay Computed.

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