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Mesothelioma is a rare type of cancer that effects the lining of the chest, abdomen or heart. Most people who have or have had mesothelioma have been exposed to asbestos about 35-40 years before contracting the disease. Asbestos have been known to come from certain insulators, cements, roofs and household cleaners, among other things. An exposure to asbestos for as little as 2 or 3 months can result in mesothelioma, however most asbestos have been removed from products since the 1980s. The symptoms of this disease are not specific, which can result in a delay in diagnoses. Some early symptoms of mesothelioma are pneumonia, shortness of breath, chest pain, and cough.
Mesothelioma the medical name for cancer of the lung or the abdomen lining, and is usually caused by exposure to asbestos.
Mesothelioma is a type of cancer. It is a cancer of mesothelial cells. These cells cover the outer surface of most of our internal body organs, forming a lining that is sometimes called the mesothelium.
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 other forms a sac around it. 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 adjacent structures.
The mesothelium has different names, depending on its location in the body. The peritoneum is the mesothelial tissue that covers most of the organs in the abdominal cavity. The pleura is the membrane 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 mesothelioma begin in the pleura or peritoneum
The tissues lining (or covering) the lungs are called the pleura. There are two pleura. These can be called pleural membranes. The gap between them is called the pleural space. The pleura are fibrous sheets. They help to protect the lungs. They produce a lubricating fluid that fills the gap between the two pleura. This helps the lungs to move smoothly in the chest when they are inflating and deflating as we breathe.
Mesothelioma is most often diagnosed in the pleura. This is known as pleural mesothelioma. Because it is so close, pleural mesothelioma can also affect the sheet of tissue covering the heart - the pericardium. Doctors call the pericardium the lining, although it is on the outside of the heart. It protects the heart and allows it to move smoothly within the sac that
surrounds it. So it does much the same job for the heart as the pleura do for the lungs.
Mesothelioma cancer can be fatal and spread to other areas of your body through your blood. Cat scans, X-rays and MRIs are used to diagnose this cancer. If you are aware of being exposed to asbestos in the past, please contact your doctor immediately, as the sooner you are diagnosed, the more successful treatment will be. If you are not sure that you were exposed to asbestos, but have worked in construction or with house held cleaners before the 1980s, you should ask your doctor to get tested just to be safe. Mesothelioma is usually treated with a combination of surgery, chemotherapy and radiation therapy. If you are diagnosed with the disease while it is in a late stage, the expected survival rate is only 8-12 months, however patients who are diagnosed early have been known to have a much better survival rate, about 40% living for five years.
The tissue lining the abdomen is called the peritoneum. It helps to protect the contents of the abdomen. It also produces a lubricating fluid. This helps the organs to move smoothly inside the abdomen as we move around.
Mesothelioma of the tissues lining the abdominal cavity in known as peritoneal mesothelioma. It is much less common than pleural mesothelioma.
It is unusual for mesothelioma to spread to other parts of the body. But if it does, it does not usually cause troublesome symptoms.
There is a form of non cancerous (benign) mesothelioma that can develop in the lining of the lungs, or in the lining of the reproductive organs. It can occur in either men or women. These non cancerous tumours are very rare.
Although reported incidence rates have increased in the past 20 years, mesothelioma is still a relatively rare cancer. About 2,000 new cases of mesothelioma are diagnosed in the United States each year. Mesothelioma 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.
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