What is Mesothelioma?

Mesothelioma is a form of cancer located in the lining of either the lungs, abdomen or the heart. These linings are thin layers of tissue covering the organ.

The pleura is the tissue covering the lungs and the wall of the chest cavity which cushions and protects the lungs. The peritoneum lines the abdominal wall and surrounds most of the organs in the abdomen. The pericardium is the tissue surrounding the heart.

Mesothelioma is a rare but very serious cancer. There are three types of mesothelioma based on the types of cancerous cells. The most common type is epithelioid and consists of 50-70% of total cases and has the best prognosis. The second type is called sarcomatoid, consists of 10-20 % of mesothelioma cases and is more unpredictable in nature. The third type of mesothelioma is called biphasic, it is a combination of the other two types and consists of 20-35% of all cases.

There are an estimated 2000-3000 new cases of mesothelioma in the United States every year. The majority of these cases begin in the chest wall (pleural mesothelioma), a few start in the abdomen (peritoneal mesothelioma) and very rare are the cases starting in the lining surrounding the heart (pericardial mesothelioma).

The pleura is a thin lining of mesothelial cells. There are two pleuras in the chest, the parietal pleura and the visceral pleura. The parietal pleura lines the chest wall including the inside of the ribs, diaphragm and pericardium. The visceral pleura covers the lungs and filters fluid to and from the chest. If the pleura becomes diseases it is not effective at eliminating fluid from the chest resulting in pleural effusion or too much fluid in the chest.

Mesothelioma is usually the result of exposure to asbestos. Most people who are diagnosed with mesothelioma have had jobs where they breathed asbestos fibers. It may take up to 60 years from the time of asbestos exposure until mesothelioma develops.

Although rare, mesothelioma is a serious form of cancer which is often in its advanced stage when a diagnosis is made. In general, prognosis for mesothelioma patient is poor, however, some patients live with the disease for a long time. As mentioned earlier, the type of mesothelioma has an impact on the prognosis, as well as, the age of the patient, how much tumor has developed and if treatment is rendered. There are many variables in evaluating a mesothelioma case, so only the patients doctor can determine the best treatment and possible prognosis on an individual basis.

About The Author

Jill Kane provides useful information and resources regarding mesothelioma and asbestos at www.mesothelioma-101.org.

A Quick Note From The Publisher... If you like the article above, you may be interested in the following article which is also related to Mesothelioma... Mesothelioma: Your Basic Information Mesothelioma is a form of cancer that is becoming more and more common. The most common cause of this cancer is exposure to asbestos. When constantly exposed with insufficient protection, asbestos dust and fibres affect the mesothelial cells which make up the mesothelium. The mesothelium is the outer lining that protects some of the body's most vital organs such as the heart and lungs. The mesothelial cells become abnormal after lengthy periods of constant exposure to asbestos causing an array of problems. Due to the latency period and symptoms of this cancer, mesothelioma is very difficult to diagnose. Mesothelioma takes decades to mature and develop fully and this is why many elderly men who were exposed to asbestos thirty years before are just discovering they have the cancer. A lot of these men are currently lodging multi-million dollar lawsuits against the companies that exposed them to the dangers of asbestos without sufficient protection. The organs that are affected most...

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