4.7 Article

Mesothelioma and Colorectal Cancer: Report of Four Cases with Synchronous and Metachronous Presentation

Journal

Publisher

MDPI
DOI: 10.3390/ijms23052630

Keywords

asbestos; mesothelioma; peritoneum; pleura; colon cancer; BAP1; CDKN2A

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There is evidence suggesting that asbestos may play a role in the carcinogenesis of digestive cancers, although the mechanism is still unclear. This study reports four unusual cases of colorectal cancers in patients with long-term asbestos exposure who also developed mesothelioma. The evaluation of certain proteins supports the hypothesis that they are tumor suppressor genes involved in disease progression in both digestive cancers and mesothelioma.
There is evidence that asbestos could play a role in the carcinogenesis of digestive cancers. The presence of asbestos fibres in histological samples from gastric, biliary, colon cancers has been reported, but the mechanism is still controversial. It has been hypothesised that asbestos reaches these sites, especially through contaminated water; however, some experimental studies have shown that the inhaled fibres are mobile, so they can migrate to many organs, directly or via blood and lymph flow. We report four unusual cases of colorectal cancers in patients with a long history of asbestos exposure who also developed synchronous or metachronous mesothelioma. We evaluated the roles of BRCA associated protein-1 (BAP1) and cyclin-dependent kinase inhibitor 2A (CDKN2A) in colon cancer and mesothelioma to support the hypothesis that BAP-1 and CDKN2A are tumour suppressor genes involved in disease progression, recurrence, or death in both digestive cancers and mesothelioma. Potentially, these markers may be used as predictors of worse prognosis, but we also stress the importance of clinical surveillance of exposed patients because asbestos could induce cancer in any organ.

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