Anything that increases the risk of contracting a disease is called a risk factor. Having a risk factor does not mean they will suffer from cancer, not having risk factors does not mean that you will suffer from cancer. People who think they are at risk should discuss with your doctor.

Many people with malignant mesothelioma have worked or lived in places where they inhaled or swallowed asbestos. After exposure to asbestos, it usually takes a long time until it manifests malignant mesothelioma. Other risk factors for malignant mesothelioma include:

• Living with a person who works near asbestos.
• Being exposed to certain viruses.

Possible signs of malignant mesothelioma include shortness of breath and pain under the rib cage.

Sometimes the cancer causes fluid to collect around the lung or abdomen. These symptoms may be caused by the fluid or malignant mesothelioma. Other disorders can cause similar symptoms. Call your doctor if any of the following problems:

• Shortness of breath.
• Pain below the rib cage.
• Pain in the abdomen or inflammation.
• Lumps in the abdomen.
• Weight loss for no known reason.