Anyone who has mesothelioma or knows someone who has mesothelioma knows the pain and suffering one has to endure from this deadly disease. Mesothelioma is a rare form of cancer which is almost always caused by exposure to asbestos. Even though this disease is quite rare, it is very serious and in most cases has a lethal outcome. Most people who develop mesothelioma have worked on jobs where they inhaled asbestos particles, or they have been exposed to asbestos dust and fiber in other ways.