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Published on: December 21, 2019
[Cluster of malignant mesothelioma cases in a thermostat manufacturing industry]
Maria Rita Aiani1, L Settimi, R Festa
1Servizio Prevenzione e Sicurezza negli Ambienti di Lavoro (SPSAL), ASL Provincia di Como.
Background:
Malignant mesothelioma is a rare disease and the identification of a cluster of cases suggests a possible presence of an asbestos contamination source.
Objectives:
To describe 3 cases of malignant mesothelioma (2 pleural and 1 peritoneal) that occurred in workers employed in the same thermostat factory.
Methods:
Since this occupational sector is not traditionally known for asbestos exposure the Lombardy Mesothelioma Registry proposed to Local Occupational Health Unit to investigate this industry.
Results:
From the first inspection of the plant, an environmental asbestos contamination (ropes covering oven handle and gasket) was found. But the greatest source of exposure was identified in the melamine resin reinforced with asbestos that constituted some internal parts of thermostats and that were sheared and perforated by the workers. So the 3 cases were defined as occupational diseases and legal procedures were initiated.
Conclusion:
The results underline the importance of a close cooperation within Local Occupational Health Units and Mesothelioma Registry in the identification and evaluation of asbestos occupational exposure otherwise not recognized, determining thus the loss of precious information.
Insights
Three workers developed malignant mesothelioma due to asbestos exposure in a thermostat factory. This highlights the critical need for occupational health surveillance to identify unrecognized asbestos risks.
Area of Science:
- Occupational Health
- Environmental Epidemiology
- Oncology
Background:
- Malignant mesothelioma is a rare cancer.
- A cluster of cases indicated a potential asbestos exposure source.
Observation:
- Three workers from a thermostat factory were diagnosed with malignant mesothelioma (2 pleural, 1 peritoneal).
- The occupational sector was not traditionally associated with asbestos exposure.
Findings:
- Asbestos contamination was found in oven components and, significantly, in asbestos-reinforced melamine resin used in thermostat parts.
- Workers experienced exposure through shearing and perforating these materials.
- The cases were recognized as occupational diseases, leading to legal action.
Implications:
- Emphasizes the importance of collaboration between Local Occupational Health Units and Mesothelioma Registries.
- Underscores the need for thorough investigation to uncover non-traditional asbestos exposure sources.
- Highlights the risk of losing critical information when occupational exposures are not identified.
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