Related Experiment Video
Updated: Jul 16, 2026

Implantation and Monitoring by PET/CT of an Orthotopic Model of Human Pleural Mesothelioma in Athymic Mice
Published on: December 21, 2019
Non-occupational malignant pleural mesothelioma due to asbestos and non-asbestos fibres
L Proietti1, L Spicuzza, A Di Maria
1Dipartimento di Medicina Interna e Patologie Sistemiche--Sezione di Medicina del Lavoro, Università di Catania, Italy. proietti@unict.it
Background And Aim:
The occurrence of malignant pleural mesothelioma (MPM) has been reported among population groups with no documented professional exposure to asbestos fibres living in different geographic areas. This paper reviews existing data related to non occupational MPM including its occurrence in the province of Catania (Sicily, Italy).
Methods:
An electronic search of literature related to non occupational MPM was performed including the year 2005.
Results:
Non occupational MPM in subjects living in areas contaminated by a variety of asbestos and non asbestos fibres has been well documented through a number of epidemiologic studies including cases series, case-control studies, and a cohort study. In addition, the observation of familial clustering of MPM, suggests that genetic factors may play a role in the pathogenesis of this malignancy. The epidemiological evidence also suggests that MPM may occur as a result of the interaction between environmental carcinogens, genetic factors, and virus infection.
Conclusion:
It is likely that genetic predisposition and non-occupational exposure to low doses of asbestos and asbestos-like fibres may concur to the development of malignant mesothelioma. However, additional epidemiological and laboratory studies are needed to further understand the relationship between environmental exposure and individual susceptibility to this malignancy.
Insights
Malignant pleural mesothelioma (MPM) can occur without occupational asbestos exposure, potentially due to genetic predisposition and environmental factors. Further research is needed to understand this complex relationship.
Area of Science:
- Environmental Health
- Oncology
- Epidemiology
Background:
- Malignant pleural mesothelioma (MPM) occurrence is noted in populations without occupational asbestos exposure.
- This review examines non-occupational MPM, including cases in Catania, Sicily.
Purpose of the Study:
- To review existing data on non-occupational malignant pleural mesothelioma.
- To investigate the occurrence of MPM in the province of Catania, Sicily.
Main Methods:
- An electronic literature search was conducted for non-occupational MPM studies up to 2005.
Main Results:
- Non-occupational MPM is documented in areas with various fiber contaminations.
- Familial clustering suggests a role for genetic factors in MPM pathogenesis.
- Evidence indicates MPM may result from interactions between environmental carcinogens, genetics, and viral infections.
Conclusions:
- Genetic predisposition and low-dose, non-occupational fiber exposure likely contribute to MPM development.
- Further epidemiological and laboratory studies are essential to elucidate the links between environmental exposure, individual susceptibility, and malignancy.
Related Concept Videos
Pleural Disorders: Types and Brief Description
Pleural Effusion II: Symptoms and Management
A pleural effusion is the abnormal collection of fluid between the parietal and visceral pleura layers of tissue that form the lining of the lungs and chest cavity. It can occur independently or due to surrounding parenchymal diseases, such as infection, malignancy, or inflammatory conditions.
Clinical Manifestations:
Pleura of the Lungs
Other Pulmonary Disorders
Pleural Effusion I: Introduction
There are two main types of pleural effusion: transudative and exudative. They are differentiated using Light's criteria,...
Cancer Prevention
Some...

