Can malignant mesothelioma be found early?

Mesothelioma is uncommon, and there is no widely recommended screening schedule for this cancer in people who are not at increased risk. (""Screening" refers to testing for cancer in people who don't have any symptoms.)
For people with known exposure to asbestos, some doctors recommend imaging tests such as chest x-rays or computed tomography (CT) scans to look for changes in the lungs that might be signs of mesothelioma or lung cancer. But it is not clear how useful these tests are in finding mesotheliomas early.

In recent years, doctors have found that people with mesothelioma often have elevated levels of certain substances in their blood, including osteopontin and soluble mesothelinrelated peptides. Blood tests for these substances may one day prove useful in finding mesotheliomas early, although right now they are used mainly to monitor the course of the disease in people who are already known to have mesothelioma.

Most mesotheliomas are found when a person goes to a doctor because of symptoms. People who have been exposed to asbestos should know the possible signs and symptoms of mesothelioma (see the section, "How is malignant mesothelioma diagnosed?"). Many of these symptoms are more likely to be caused by something other than mesothelioma,
but it's important to report any new symptoms to your doctor right away so that the cause can be found and treated, if needed.

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