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Mesothelioma - An Introductionby: Rob Mellor What is Mesothelium? To understand Mesothelioma let us first understand what mesothelium is. The mesothelium is a membrane that covers & protects most of the internal organs of the body, the mesothelium is composed of two layers of cells, one layer immediately surrounds the organ the other forms a sac like covering around it. The mesothelium membrane produces a lubricating fluid that is released between these layers, allowing moving organs such as the beating heart and lungs to slide easily against adjacent structures. The mesothelium is called by different names, depending on where it is located in the body. For e.g. the peritoneum is the mesothelial tissue that covers most of the organs in the abdominal cavity. The pericardium covers and protects the heart. The pleura is the membrane that surrounds the lungs and lines the wall of the chest cavity. The mesothelial tissue surrounding the male internal reproductive organs is called the tunica vaginalis testis. The tunica serosa uteri covers the internal reproductive organs in women. What is Mesothelioma? Now the next question that arises is what is Mesothelioma? Mesothelioma or the cancer of the mesothelium is a disease in which cells of the mesothelium become abnormal and divide without control or order. They can invade and damage nearby tissues and organs. Cancerous cells can also spread called metastasizing from their original place to other parts of the body. Most cases of Mesothelioma begin in the pleura or peritoneum, i.e. the lining surrounding the chest and the lungs. In malignant Mesothelioma, which is a rare form of cancer, the cancerous or malignant cells are found in the sac lining the chest (the pleura), the lining of the abdominal cavity (the peritoneum) or the lining around the heart (the pericardium). How do you get Mesothelioma? The single largest cause of Mesothelioma is working with asbestos; it is a major risk factor for Mesothelioma. A history of asbestos exposure at work is reported in about 70 percent to 80 percent of all cases. However, there have been cases where Mesothelioma has been reported in some individuals without any known exposure to asbestos. Most people with malignant Mesothelioma have worked on jobs where they breathed asbestos. Others have been exposed to asbestos in a household environment, often without their knowledge. What is Asbestos? Asbestos is the name of a group of minerals that occur naturally as masses of strong, flexible fibers that can be separated into thin threads and woven. Asbestos has been widely used in many industrial products, including cement, brake linings, roof shingles, flooring products, textiles, and insulation. If tiny asbestos particles float in the air, especially during the manufacturing process, they may be inhaled or swallowed, and can cause serious health problems. In addition to Mesothelioma, exposure to asbestos increases the risk of lung cancer, asbestosis (a non cancerous, chronic lung ailment), and other cancers, such as those of the larynx and kidney. The risk of asbestos-related disease increases with heavier exposure to asbestos and longer exposure time. There is some evidence that family members and others living with asbestos workers have an increased risk of developing Mesothelioma, and possibly other asbestos-related diseases. This risk may be the result of exposure to asbestos dust brought home on the clothing and hair of asbestos workers. Latest Cancer News:Taking Aim at Brain Cancer (Forbes) Smarter matching of drugs to patients is likely to improve on the lukewarm results seen so far with targeted cancer therapies. 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News) New screening tests and effective vaccines from Merck & Co and GlaxoSmithKline make tackling cervical cancer in poor countries a real possibility for the first time, researchers said on Thursday. Correction: Hot Dogs-Cancer story (AP via Yahoo! News) In an Aug. 26 story about a new TV ad linking hot dogs with cancer, The Associated Press, relying on figures provided by a nutrition adviser to the American Institute for Cancer Research, erroneously reported average risks for colon cancer and how eating hot dogs affects those risks. Karen Collins said she misstated the average adult's lifetime risk for getting colorectal cancer, which is about ... Cancer spread 'happens earlier' (BBC News) Apparently "normal" cells may carry cancer to new sites long before a tumour develops, scientists say. Cervical Cancer Rate May Fall in Poor Nations With Tests, Shots (Bloomberg.com) Aug. 28 (Bloomberg) -- New screening methods and immunization shots are making it possible to control the number of cervical cancer cases in developing countries for the first time, researchers said in a Vaccine medical journal report. E! Standing Up To Cancer Too (Broadcasting and Cable) Entertainment network joins ABC, CBS and NBC in broadcasting 'Stand Up To Cancer' special. Mun2, E! Step Up to ?Stand Up to Cancer? (TV Week) Mun2 and E! Entertainment Television are joining other networks in airing the charity special ?Stand Up to Cancer? on Sept. 5 at 8 p.m. ? Stand Up to Cancer ,? put together by the Entertainment Industry Foundation, will air live simultaneously on ABC, CBS and NBC and will feature appearances by several celebrities and performers in an effort to raise funds for cancer research. Correction: Hot Dogs-Cancer story - The Associated Press
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