Autor :Pérez Conde, Lucas1
1 University Pulmonologist. Pulmonary Laboratory of the IADT, Instituto Argentino de Diagnóstico y Tratamiento, Buenos Aires, Argentina
https://doi.org/10.56538/ramr.IMHP3149
Correspondencia : Lucas Pérez Conde. E-mail: lucasperezconde@yahoo.com.ar
ABSTRACT
In the context of an isolated
bronchial hyperreactivity condition, the patient
presents bilateral pleural images consistent with chronic asbestos exposure
Key words:
Bronchial Hyperreactivity, Asbestos, Pleura
RESUMEN
Paciente
masculino, sin antecedentes conocidos, nunca tabaquista, que en el contexto de
un cuadro de hiperreactividad bronquial aislado, se evidencian imágenes
pleurales bilaterales compatibles con exposición crónica a asbesto.
Palabra
clave: Hiperreactividad
bronquial, Asbestos, Pleura
Received: 01/11/2023
Accepted: 11/08/2023
We present the case of a frequent
user of the Metro B line in the City of Buenos Aires. Due to a respiratory
condition as an isolated finding, calcified pleural images compatible with
pleural asbestosis were detected.
Male patient, 68 years old. No
clinical history. Non-smoker. Retired
teacher.
When exposed to wood dust in a
confined environment, the patient experienced an episode of bronchial hyperreactivity that resolved with inhaled budesonide/formoterol, and symptoms did not recur subsequently.
A simple chest X-ray was
performed, revealing two heterogeneous radiopacities
for the right cardiac silhouette and one opacity for
the left cardiac silhouette (Figure 1).
Subsequently, a chest computed
tomography (CT) was performed, revealing bilateral calcified pleural plaques
(Figure 2) and a solid nodule in the lower left lobe of approximately 15 mm
(Figure 3).
The problem oriented medical
record didn’t report any recent travel, contact with animals, or exposure to
inhaled toxic substances in the context of the patient’s working environment.
But the individual did confirm that between 2005 and 2019 he commuted daily in
Line B of the Buenos Aires underground system, traveling from the first to the
last station.
DISCUSSION
There is extensive knowledge that
exposure to asbestos can lead to pulmonary conditions. Such exposure can be
either occupational or non-occupational, and within the latter,
it is further described as environmental, for cases where the patient
resides near establishments where hygiene and industrial safety conditions are
not adequately implemented, and domestic or household, especially
when industrial substances are brought home by the worker, for example, through
their work clothing.1
Another described para-occupational exposure is through exposure to
commercial products containing asbestos that are used globally or are already
established. These products are diverse and include automobile brakes, asbestos
cement products, textiles, adhesives, insulation, duct parts, and materials for
roofing and flooring.2
Health conditions caused by this
mineral in humans are also classified into two groups: non-neoplastic,
such as pleural plaques, “round atelectasis,” or asbestos-related pulmonary
fibrosis, and neoplastic, among which pleural mesothelioma (MTM) and bronchopulmonary cancer stand out.3
Non-occupational asbestosis could
account for nearly 20% of MTMs in industrialized countries.4
Although the relationship between
asbestos and pulmonary fibrosis has been known since the last century, the
production of this mineral on an international level continued until the
1940s. It was only in the 1980s that its carcinogenic properties became clearly
recognized, through Wagner’s initial article that associated asbestos with
malignant pleural mesothelioma (MPM). From that moment, efforts were made to
reduce asbestos production and promote its replacement with other materials.
In our country, starting from
Resolution No. 823/2001 of the Ministry of Health, the production,
importation, commercialization, and use of asbestos fibers, specifically the chrysotile variety, and products containing them, are
prohibited as from January 1, 2003.5
Between 2011 and 2013, 8 years
after the aforementioned resolution, the Government of the City of Buenos
Aires acquired old metro wagons that belonged to the metro of Madrid and Japan,
manufactured during the 70s and 80s, respectively, to be used for the city’s
underground system.
In 2017, workers from the Metro
de Madrid informed their counterparts in Buenos Aires that the trains they
had acquired were contaminated with asbestos. This situation came to light when Spanish workers were found to be ill due to asbestos
exposure; even one of them had died. Up to that point, 84 workers were
identified as affected by exposure to asbestos, 6 of which developed cancer,
and 3 passed away.6
In the case we are presenting,
there are no precedents of occupational exposure, no residence near factories
with potential use of asbestos, and no family members with high-risk
occupations. It appears to be a case of non-occupational asbestosis, in which
the only record of contact with this mineral is the daily commute in a means of
transportation where asbestos contamination has been confirmed.7
Acknowledgment
To Pleural Plaques and Asbestosis
REFERENCES
1.
Rey D. Asbestosis no ocupacional: un riesgo potencial a tener en consideración.
Rev Am Med Resp. 2022;2:186-94.
2. Noonan C.
Environmental asbestos exposure and risk of mesothelioma. Ann
Transl Med 2017; 5:234.
3.
Rey D. Asbestosis: un problema del siglo XX que persiste en el siglo XXI. Rev Am Med Resp. 2019;4:253-254
4. Goldberg M, Lucea D. The health impact of non occupational
exposure to asbestos: what do we know? Eur J Cancer Prev. 2009; 18:489-503. https://doi.org/10.1097/CEJ.0b013e32832f9bee
5.
Ministerio de Salud de la Nación. Resolución 823/2001. Prohíbase la producción,
importación, comercialización y uso de fibras de asbesto variedad crisotilo y productos que las contengan, a partir del 1.° de enero de 2003.
6.
https://www.tiempoar.com.ar/informacion-general/asbesto-drama-subterraneo/
7.
https://asbestoenelsubte.com.ar/asbesto-encontramos.html