Mesothelioma is an uncommon type of cancer in which the malignant (cancerous) cells are found in the mesothelium asics gel kinsei sale , a protective sac lining most of the body s internal organs. Most people who develop the disease were exposed to asbestos inhalation at their place of work. The mesothelium is a membrane that covers and protects most of the internal organs of the body. It is composed of two layers of cells: One layer immediately surrounds the organ {the visceral layer} and the other layer forms a sac around it {the parietal layer}. The mesothelium produces a lubricating fluid that is released between these layers, allowing moving organs (such as the beating heart and the expanding and contracting lungs) to glide easily against surrounding structures. The mesothelium has different names, depending on its location in the body. The peritoneum is the mesothelial lining that covers most of the organs in the abdominal cavity. The pleura is the lining that surrounds the lungs and lines the wall of the chest cavity. The pericardium covers and protects the heart. 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. Mesothelioma (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. Cancer cells can also metastasize (spread) from their original site to other parts of the body. Most cases of the cancer begin in the pleura or peritoneum. 1 How common is mesothelioma? Although reported incidence rates have increased in the past 20 years, this disease is still a relatively uncommon type of cancer. About 2,000 new cases of mesothelioma are diagnosed in the United States each year. It occurs more often in men than in women and risk increases with age, but this disease can appear in either men or women at any age. 2 What are the risk factors? Working with asbestos is the 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 asics gel kayano 18 womens uk , the disease has also been reported in some individuals without any known exposure to 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 asics onitsuka tiger mexico 66 black white , 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. Apart from causing mesothelioma, exposure to asbestos increases the risk of lung cancer asics gel saga sale uk , asbestosis (a non cancerous, long standing chronic lung ailment), and other cancers, such as those of the larynx and kidney. Smoking does not appear to increase the risk of mesothelioma. However, the combination of smoking and asbestos exposure significantly increases a person s risk of developing cancer of the air passageways in the long run. 3 Who are the people at risk of developing the cancer? Asbestos has been mined and used commercially since the late 1800s. Its use greatly increased during World War II. Since the early 1940s, millions of American workers have been exposed to asbestos dust. Initially asics gel noosa tri 9 uk , the risks associated with asbestos exposure were not known. However, an increased risk of developing mesothelioma was later found among shipyard workers, people who work in asbestos mines and mills, producers of asbestos products, workers in the heating and construction industries, and other tradespeople. Today asics gel noosa tri 7 pink , the U.S. Occupational Safety and Health Administration (OSHA) sets limits for acceptable levels of asbestos exposure in the workplace. People who work with asbestos wear personal protective equipment to lower their risk of exposure. The risk of asbestos related disease increases with heavier exposure to asbestos and longer exposure time. However, some individuals with only brief exposures have developed this type of cancer. On the other hand, not all workers who are heavily exposed develop asbestos related diseases. There is some evidence that family members and others living with asbestos workers have an increased risk of developing this cancer, 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. To reduce the chance of exposing family members to asbestos fibers, asbestos workers are usually required to shower and change their clothing before leaving the workplace. 4 What are the common Symptoms Symptoms may not appear until 30 to 50 years after exposure to asbestos. Shortness of breath and pain in the chest due to an accumulation of fluid in the pleura are often symptoms of pleural mesothelioma. Symptoms of peritoneal mesothelioma include weight loss and abdominal pain and swelling due to a build up of fluid in the abdomen. Other symptoms of peritoneal mesothelioma may include intestinal obstruction, blood clotting abnormalities asics gel noosa tri 6 for sale , low blood levels{anaemia}, and fever. If the cancer has spread beyond the mesothelium to other parts of the body, symptoms may include pain, trouble swallowing, or swelling of the neck or face. These symptoms may be caused by mesothelioma or by other, less serious conditions. It is important to see a doctor about any of these symptoms. Only a doctor can make a definitive diagnosis. 5 How is the diagnosis made? Diagnosing mesothelioma is often difficult asics gel lyte v sale uk , because the symptoms are similar to those of a number of other conditions. Diagnosis begins with a review of the patient s medical history, including any history of asbestos exposure. A complete physical examination must be done , x rays of the chest or abd
