Mesothelioma (cancer of the mesothelium) is a disease in which cells of the mesothelium become abnormal and divide without control and without order. Cancer cells can also spread from their original site to other body parts. Most cases of mesothelioma begin in the pleura or peritoneum. Mesothelioma is a noncancerous or cancerous tumor that affects the lining of the chest or abdomen. Inhaling asbestos fibers increase ones risk of getting malignant or cancerous mesothelioma. Mesothelium are cells that line bodily organs - abdominal organs, usually the lungs, and heart. The most common form of mesothelioma is pleural mesothelioma, where the malignant tumors form on the pleura, the sac that lines the chest cavity and protects the lungs. Other forms of mesothelioma affect the peritoneum (abdominal cavity lining) and the pericardium (which is lining around the heart). Mesothelioma is usually caused by asbestos exposure. People who are exposed to asbestos fibers for just a short period of time - even weeks - or even to a small amount may be at risk. So mostlyu people working with asbestos and their family members or those who live with them are at risk to develop mesothelioma. Remember it may take 35 years for somone to actually develop cancer after they first have been exposed.
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