Mesothelioma is a Type of Cancer

By Alan Jason Smith

Mesothelioma is a type of cancer affecting the cells of mesothelial lining in the chest and abdomen. Mesothelioma is rare, though it appears to be on the rise. Approximately 2,000 to 3,000 new cases of mesothelioma are diagnosed each year in the United States alone. Symptoms for both types of mesothelioma are not specific only to this disease, and often go undiagnosed or misdiagnosed for a significant amount of time. Difficulty breathing, abdominal and chest pain, and fever can all be attributed to other causes, so this cancer has time to advance fairly fair before diagnosis usually occurs. Due to the difficulty in diagnosis of mesothelioma, survival time after diagnosis is estimated at about a year.

There are two main types of mesothelioma. The first type, pleural mesothelioma, spreads within the chest cavity, and sometimes involves the lungs. This type or cancer can metastasize into any of the body’s organs, including the brain.

Metastasis occurs more often than previously thought, and signals the disease’s progression. Symptoms of pleural mesothelioma include persistent pain in the chest and severe difficulty breathing caused by pleural effusion, or an accumulation of fluid in the pleural lining Cough, weight loss, and fever are also common symptoms. Survival time for this type of mesothelioma is better than that of peritoneal mesothelioma. The median survival time is 17 months, with ten percent of patients living for three years after diagnosis.

The second type of mesothelioma is peritoneal mesothelioma. This cancer invades the abdominal cavity, the liver, spleen, and sometimes the bowel. Predominant symptoms of peritoneal mesothelioma include persistent pain the region as well as a swollen abdomen, both due to the accumulation of fluid in the abdomen and affected organs. Other symptoms include nausea, vomiting, and swelling of feet, fever, and difficulty moving the bowels. The prognosis for peritoneal mesothelioma is worse than that of pleural mesothelioma, with a median survival time of only ten months past diagnosis.

Mesothelioma takes two rarer forms. Benign mesothelioma is a cancer of the mesothelioma of the peritoneum. The peritoneum is the lining of the major organs in the chest and abdomen. It is difficult to diagnose, and appears more frequently in young women. Mesothelioma of the pericardium is a very rare cardiac cancer. Mesothelioma can also occur in the ovaries and scrotum. The prognosis for these unusual kinds of mesothelioma, with the exception of benign mesothelioma, is very poor.

The progression of mesothelioma is broken down to four stages. These stages provide a baseline to predict how far along the cancer has spread. Staging is based on x-rays, CT scans, and MRI imaging. Treatment decisions and prognosis depend upon the stage of the mesothelioma, as well as the kind if mesothelioma. In the first stage, mesothelioma is present in the pleura, lung, pericardium, or diaphragm, and is localized to one side of the body. Mesothelioma invades the chest wall or the esophagus during the second stage. The second stage may also see cancer in the heart, both sides of the pleura, or the lymph nodes in the chest. The third stage involves penetration through the diaphragm and into the peritoneum, and sees cancer spread to more distant lymph nodes. The fourth and final stage occurs when tests provide evidence of metastases in distant organs. Within the fourth stage, the mesothelioma spreads through the bloodstream to these new sights.

Mesothelioma is most often caused by exposure to Asbestos. Asbestos was frequently used for insulation in homes or businesses. Schools, factories, and military buildings have also been found to contain asbestos. Radiation from thorium dioxide may also cause mesothelioma. This material was once used for x-rays, though was not widely used for long. Zeolite, a silicate material related to asbestos, may also cause mesothelioma. Cases of Zeolite-induced mesothelioma centralize in the Anatoli region of Turkey.

About The Author:

Alan Jason Smith is the owner of http://www.abemesothelioma.com which is a great place to find mesothelioma links, resources and articles. For more information go to: http://www.abemesothelioma.com

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What is Mesothelioma?

By Patricia Hughes

Mesothelioma is a cancer of the mesothelium; the protective sac that covers and protects most internal organs of the body. The mesothelium has two layers, one, which covers the organ, and a second, which forms a sac around it. The mesothelium has different names depending on the location in the body. The pleura is the name for the mesothelial tissue surrounding the lungs and lining the chest cavity. The peritoneum covers most of the organs in the abdominal cavity, while the pericardium covers and protects the heart.

The mesothelium produces a lubricating fluid that allows organs within it to move and glide easily. The fluid allows the lungs to breathe and the heart to expand and contract without creating any type of internal friction.

Like other forms of cancer, mesothelioma occurs when cells become abnormal and divide or grow out of control. When someone has mesothelioma, the helpful lubricating fluid described above may be over-produced. This excess fluid encases the organs with a thick layer of tumor tissue, described as a rind type of layer. In advanced cases of mesothelioma, cells metastasize, or grow and invade other organs and spread to other areas of the body. The majority of individuals suffering from mesothelioma have cancer in the lining of the lung. Sometimes, mesothelioma occurs in the lining of the abdominal cavity (peritoneal mesothelioma) or in the lining of the heart (pericardial mesothelioma).

The symptoms of mesothelioma are common to a number of illnesses which means that mesothelioma is difficult to diagnose. Unique types of treatment for mesothelioma are still being investigated through clinical trials and research, but as a general rule, mesothelioma does not respond well to most treatments that are currently being offered.

Mesothelioma is caused by breathing or ingesting asbestos fibers. The coarse fibers cause scarring of the mesothelial tissue which can cause asbestosis or pleural plaques. Unfortunately, the scarring can also lead to cancer known as mesothelioma.

It often takes 20 to 50 years after exposure to asbestos before the symptoms of mesothelioma develop. This period of time is referred to as a latency period. Because of the latency period, the disease commonly affects men and women that are at least 50 years of age and that worked with asbestos between 20 and 50 years ago. Many workers working 20 to 50 years ago did not use any type of protection in the workplace while they were exposed to the dust or fibers from asbestos. At the same time, however, many of the companies employing the workers had full knowledge that asbestos was dangerous and that exposure to asbestos would harm the health of many of the workers. Insulators, plasterers, electricians, pipefitters, mechanics, ironworkers, ship builders, ship workers, brick layers, carpenters, and other tradesmen are just a few examples of workers that were likely to work with asbestos on a day-to-day basis. Also at risk are the families of these workers, as the asbestos fibers may be brought into the home from the clothes, skin, or hair of the worker.

If the mesothelioma is detected in the earlier stages and treated aggressively, studies have shown that half will survive two years and 20 percent will survive five years. However, if the diagnosis is for Advanced Mesothelioma, only 10 percent have a three-year survival rate and only 5 percent have a life expectancy of five years. Keep in mind that these statistics should only be used as general guidelines, and not as a definitive idea of an individual patient's survival rate. Patients are encouraged to speak with their physicians about their individual prognosis.

Unfortunately, millions of people have been exposed to asbestos over the years. Only now are we able to see the disastrous effects of asbestos exposure in the workplace.

As with other cancers, a speedy diagnosis is important to effective treatment of mesothelioma. If you believe that you may have mesothelioma and that you worked with asbestos in the past, you may wish to inform your doctor of this fact.

WHAT ARE YOUR LEGAL RIGHTS?

If you or a loved one have been diagnosed with mesothelioma in the last five years, you may wish to meet with an attorney to discuss your legal rights. Anyone who has been diagnosed with mesothelioma should consider this option. If you have a loved one who is deceased because of mesothelioma, their spouse or an executor of the estate should also consider legal representation.

There are different avenues to consider regarding representation and the possibilities of obtaining compensation. We believe it is important that you choose representation by a firm that is exclusively devoted to mesothelioma claims. We believe you should choose a firm that has years of experience and a proven track record with mesothelioma claims.

Patricia Hughes works for an Internet marketing firm ePlus Marketing For more information contact: Maune Raichle Law firm 1-800-358-5922. The firm specializes in mesothelioma cases. Or go to: legal-mesothelioma-help.com

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Malignant Mesothelioma - Types, Causes, Stages and Treatment Options

By Dave Casey

Malignant mesothelioma is an uncommon form of cancerous tumors originating in the body tissue known as the mesothelium. The mesothelium is a specialized layer of cells that line and protect many internal organs such as the chest and abdominal cavities.

Types of Malignant Mesothelioma

The first type of malignant mesothelioma is called Pleural Mesothelioma or mesothelioma of the pleura. It is the most common type of mesothelioma making up approximately 75% of all mesothelioma cases. The pleura is a thin serous membrane found between the lungs and the chest cavity that provides a lubricated surface preventing the lungs from chafing against the chest walls. It also serves as a protective layer.

The second most common type of mesothelioma is Peritoneal Mesothelioma, also known as mesothelioma of the peritoneum. The peritoneum is a thin serous membrane that encloses the organs of the abdomen. Peritoneal Mesothelioma is a rare form of malignant mesothelioma cancer. This disease accounts for approximately 10% to 20% of all mesothelioma cases. It tends to be a more invasive form of cancer; patients diagnosed with this disease have a shorter life expectancy than if they had attracted Pleural Mesothelioma.

The third and least common type of mesothelioma is pericardial mesothelioma also known as mesothelioma of the pericardium. It accounts for less than 10% of all mesothelioma cases. The pericardium (heart sac) is the serous membrane that surrounds and protects the heart.

There are about 2,200 new cases of malignant mesothelioma of the visceral pleura each year. Mesothelioma is difficult to diagnose and is rarely curable. The most common symptoms are dyspnea and chest wall pain.

Causes Asbestos is the predominant cause of malignant mesothelioma of the visceral pleura. The period between the time of exposure to asbestos and the onset of symptoms is about 20 to 50 years. Because of this late onset, it occurs most commonly in the later years of life. It also occurs more often in men than in women.

Diagnosis

Doctors usually make an incision through the chest wall and insert an instrument called a thoracoscope between two ribs to view the area. Doctors will then do a biopsy to select a tissue sample that can be analyzed under a microscope.

Stages of Mesothelioma

Stage I: The cancer is found in the lining of the chest cavity near the lung and heart or in the diaphragm or the lung.

Stage II: The cancer has spread beyond the lining of the chest to lymph nodes in the chest.

Stage III: Cancer has spread into the chest wall, center of the chest, heart, through the diaphragm, or abdominal lining, and in some cases into nearby lymph nodes.

Stage IV: Cancer has spread to distant organs or tissues.

Treatment Radiation and radiotherapy are used in situations where the cancer is localized at the point of origin. Chemotherapy is used in more advanced stages of malignant mesotheliomas.

Cytoreductive surgery plus hyperthermic (heated) chemotherapy improves the survival and quality of life for patients with peritoneal metastases (tumors involving the lining of the abdomen).

Surgery is the option used for Stage I malignant mesothelioma. For stages II to IV, treatment by surgery is still evolving.

About the Author:

Dave Casey is a medical writer for Mesothelioma-Adviser.com, a guide for mesothelioma lung cancer victims. Visit the site for informative articles on the causes of mesothelioma, mesothelioma stages and treatment options.

Copyright 2007 Mesothelioma-Adviser.com

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