Mesothelioma.com Resources for Patients and their Families

Mesothelioma in Patients with Nonoccupational Asbestos Exposure.

The specific parameters of nonoccupational asbestos exposures (NOAE) that can distinguish an idiopathic from an asbestos-caused malignant mesothelioma (MM) are controversial. A systematic literature review yielded 1028 cases with this putative association. Only 287 of those reports had a defined single exposure to a household, building occupant, or neighborhood/community asbestos source. The available "evidence" was used to develop semiarbitrary evidence-based causation guideline rules for the assessment of putative associations between malignant mesothelioma and nonoccupational asbestos exposures. The rules are classified into class A (tissue burden analysis shows asbestos body counts or fiber counts in lung tissues comparable to MM caused by occupational exposure to asbestos) and classes B to D based on whether certain combinations of NOAE features and MM (evidence) have been described in over 15% (class B), 5% to 15% (class C), and less than 5% (class D) of the patients reviewed. The proposed 4 classes of evidence-based causation guidelines provide a semiarbitrary framework to evaluate the causes of individual MM patients by NOAE based on decreasing levels of currently available evidence. The neoplasms in classes A to C patients are probably caused by NOAE, with decreasing weight of evidence in the 3 groups. There is minimal evidence to support the causation of MM by NOAE in class D patients. There is no evidence or only anecdotal evidence to support a causal association between MM and NOAE in individuals who cannot be classified into any of the 4 classes. Future studies are needed to provide more comprehensive data regarding the association between malignant mesothelioma and NOAE.

Sources

PMID: 16844568 [PubMed - indexed for MEDLINE]
Click here to order or save article

Mesothelioma Treatment Guide

Free Mesothelioma Treatment Guide

Please fill in the form below to request our FREE Mesothelioma Treatment Guide. It will be sent to you within 24 hours.

Have you or someone you know been diagnosed with mesothelioma?

Get Access To: