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Pleural effusion is one of the most common symptoms of mesothelioma. It is fluid accumulation between the visceral pleura (the membrane that covers the lungs) and parietal pleura (the membrane that covers the diaphragm and chest wall). Both the visceral pleura and parietal pleura are covered with mesothelial cells which give rise to a small amount of fluid that acts as a lubricant between the lung and chest wall. Lymph vessels absorb any excess fluid to maintain a balance. Pleural effusion occurs when there is of too much fluid and it is not absorbed by the lymph vessels.
Malignant Pericardial Mesothelioma is extremely rare form of mesothelioma cancer that makes up 5 percent of all mesothelioma cases. Until now, less than 150 cases have been presented in medical literature and about 200 cases have been reported worldwide.
In malignant Mesothelioma, there is formation of malignant cells in the abdomen or chest lining. Lots of individuals with malignant Mesothelioma have worked in places where they swallowed or inhaled asbestos. Once you are exposed to asbestos, you will find that it takes years for malignant Mesothelioma to show symptoms.
The ill effects of asbestos exposure are very serious, threatening to kill mankind with notorious diseases like asbestosis, lung cancer and pleura mesothelioma. These terminal diseases take a long time to show up, killing the infected without treatment.
What would put you into a higher risk category for Pleural Mesothelioma? The main risk is asbestos exposure, but this is just the primary risk factor. There are also other matters that could put you at risk. The National Cancer Institute goes over some of the primary and secondary factors in its: Risk Factor and Possible Causes.