Mesothelioma Symptoms

Mesothelioma typically has a long latency period, meaning that many years will pass between exposure to asbestos and the development of the disease. In fact, patients with mesothelioma typically do not manifest symptoms until several decades after the initial asbestos exposure. Because mesothelioma symptoms mimic those of less serious diseases, many patients who develop asbestos cancer are unaware of their potentially life-threatening condition.

Individuals with a history of asbestos exposure should schedule an appointment with their doctors to screen for asbestos-related diseases. Because mesothelioma does not present early symptoms, individuals who were in contact with asbestos should inform their doctor of their exposure. Patients who have a history of asbestos exposure but are not exhibiting symptoms should receive chest x-rays or lung function tests to screen for any indications of asbestos-related diseases.

The most common form of mesothelioma, pleural mesothelioma forms in the lining of the lungs. Common symptoms of pleural mesothelioma include the following: persistent dry or raspy cough; trouble swallowing; cough that produces blood; painful breathing; shortness of breath; chest or rib pain; night sweats/fever; and unexplained weight loss. Fatigue and lumps under the skin of the chest have also been reported in patients with pleural mesothelioma. Many symptoms of pleural mesothelioma occur as a result of pleural thickening, which is caused by fluid buildup between membrane layers. Pleural thickening and fluid buildup can put pressure on the lungs, causing problems with respiratory function.

Peritoneal mesothelioma develops in the abdomen and makes up approximately 30% of all mesothelioma cases. Symptoms of peritoneal mesothelioma can include swelling or pain in the abdomen, nausea and vomiting and a change in bowel habits. Peritoneal mesothelioma can also cause night sweats, fever, unexplained weight loss, anemia, fatigue and lumps under the skin of the abdomen. Symptoms of peritoneal mesothelioma develop due to the thickening of the peritoneal membrane and fluid buildup between the membrane layers. This can put pressure on the abdomen and its organs, causing the patient to experience symptoms of peritoneal mesothelioma.

The least common form of mesothelioma, pericardial mesothelioma develops in the sac surrounding the heart. Symptoms of pericardial mesothelioma include heart palpitations, chest pain, fatigue, trouble breathing, fever and night sweats. These symptoms are caused by fluid buildup and the thickening of the pericardial membrane. Because pericardial mesothelioma is rare, its list of symptoms is not as comprehensive as other forms of mesothelioma. Pericardial mesothelioma is often difficult to diagnose and typically has a poor prognosis.

Individuals experiencing symptoms of mesothelioma should seek medical attention immediately. Although mesothelioma shares symptoms with a number of less serious diseases, it's important to receive a firm diagnosis as soon as possible. Although the overall prognosis for mesothelioma is poor, patients diagnosed in the earlier stages typically have a better outlook.

A mesothelioma law firm, The Shepard Law Firm represents mesothelioma victims and their families throughout Massachusetts, New Hampshire, Vermont and Rhode Island. If you or a loved one has developed mesothelioma, contact the mesothelioma attorneys at The Shepard Law Firm for a free legal consultation.

Mesothelioma Cancer Stages Explained

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Mesothelioma cancer is a type of cancer that attacks the lungs and chest cavity. Also known as asbestos lung cancer, it forms deadly tumors where mesothelial cancer cells form a protective lining over the lungs, heart, and abdominal organs. It is a type of lung cancer that takes many years to develop and produce symptoms. Roughly 3,000 cases per year (mostly men over the age of 40) are reported. It is estimated that number will grow to about 300,000 cases before 2030.

Types of Mesothelioma Asbestos Cancer

Epithelial mesothelioma is a rare and fatal form of cancer affecting the membrane lining of the chest cavity, heart, lungs, and abdominal cavity. There are three forms of epithelial mesothelioma: the most common is Pleural Mesothelioma, the second most common, Peritoneal Mesothelioma (accounting for only a quarter of the cases), and the rarest form, pericardial mesothelioma.

Pleural mesothelioma, the most common type of this disease involves the pleura, a thin membrane located between the lungs and the chest cavity. The pleura provide a lubricated surface so that the lungs do not rub and chafe against the chest walls. There are two types of pleural mesothelioma the first being 'diffuse and malignant'. This type is cancerous and is generally fatal within a year of diagnosis. The second type is 'localized and benign' and is generally non-life threatening. It can usually be removed through surgery.

Lung Lining cancer is not to be confused with lung cancer. In lung lining cancer, the effected area of the body is called the mesothelium, a thin membrane that covers many of the internal organs of the body. The mesothelium of the lungs is called the pleura. Lung Lining cancer is also sometimes called mesothelioma after the area in which it occurs.

This thin membrane is comprised of two layers - one that surrounds the organ and another that forms an exterior sac around the first layer. Between the layers of the mesothelium is a fluid that allows vital organs to glide easily against objects that come in contact with them.

Localized pleural mesothelioma is not always caused by asbestos exposure. However, if it has spread to other parts of the body, for instance the lymph nodes, lungs, chest wall, or abdominal organs, then it is considered malignant and is more often than not the result of asbestos exposure.

Peritoneal mesothelioma appears as a tumor in the peritoneum membrane of the abdomen. This type of mesothelioma is very rare, comprising less than a fourth of all known cases of the disease. There are no effective treatments for this condition, and most patients live less than a year after diagnosis.

Mesentery cancer is likened to peritoneal cancer (mesothelioma). This cancer primarily affects the sections of the peritoneum that attach different organs to the wall of the abdominal cavity, (i.e. mesogastrium for the stomach, mesojejunum for the jejunum). Mesentery cancer includes all abdominal peritoneal extensions. Tumors rarely originate in the actual mesentery, though it is a frequent route for the spread of mesothelioma through the abdominal cavity.

Pericardial mesothelioma is the rarest form of mesothelioma, affecting the membrane around the heart (called the pericardium or pericardial sac). In this disease, solid masses and effusion (fluid) develop around the pericardium. Not all effusions are strictly related to mesothelioma.

The Causes

Mesothelioma cancer is caused by exposure to asbestos fibers or dust. Workers in the asbestos industry are prime targets for attracting this deadly disease. Asbestos fibers enter the body, either by breathing in the tiny asbestos fibers or by swallowing them. The fibers cause healthy cells to mutate into cancer. Since the body is unable to dispel these fibers, the lungs become inflamed (asbestosis). This condition worsens and eventually becomes malignant. Asbestos exposure is thought to be responsible for roughly 75% of all cases of lung lining cancer.

Symptoms

Mesothelioma is a very difficult cancer to detect in early stages. The early symptoms tend to be generic and even nonexistent in some cases, and it can take as much as 15 to 50 years after exposure to develop. The first symptom is often constant chest pain, followed by coughing, lung damage, and shortness of breath. Patients who have peritoneal mesothelioma (a less common form of mesothelioma) generally experience abdominal pain, loss of appetite, nausea, and abdominal swelling, often in addition to the symptoms of pleural mesothelioma. They may also develop bowel obstruction or further breathing obstruction.

Stages and Diagnosis of Mesothelioma

There are three staging systems used to determine treatment for mesothelioma: Butchart System, TNM System, and the Brigham System

Butchart Staging System

The Butchart System is the oldest system and the most common. This system concentrates upon determining the extent of primary tumor mass and divides mesothelioma into four stages.

Stage I of the Butchart System consists of the presence of mesothelioma in the lining of the right or left lung and may also involve the diaphragm on the same side. Stage II includes the progression of mesothelioma into the chest wall, esophagus, or lung lining on bother sides. There may also be lymph nodes in the chest. The onset of Stage III begins when the mesothelioma surpasses the diaphragm into the lining of the abdominal cavity or peritoneum. In this stage the cancer may also affect the lymph nodes extending beyond those in the chest. Doctors identify Stage IV, the final stage, when evidence of the spread of cancer to other organs (metastasis) is confirmed.

TNM System



Stage I of the TNM System involves the lining of the right or left lung, pericardium, or diaphragm on the same side. At this stage, lymph nodes are not involved. Stage II begins when mesothelioma spreads from the lining of the lung on one side to a lymph node on the same side. At this stage, the cancer may also spread to the lung, pericardium, or diaphragm on the same side. Stage III begins when mesothelioma is present in the chest wall, muscle, ribs, heart, esophagus, or other organs in the chest on the same side as the primary tumor. In the final stage, Stage IV, the mesothelioma has travelled into the lymph nodes in the chest on the side opposite the primary tumor, into the lung opposite the primary tumor, or directly into the organs in the abdominal cavity or neck. Metastasis is the final result in this stage.

Brigham System

The Brigham System determines the resectability (the ability to surgically remove) the mesothelioma mass. In Stage I the tumor is resectable, while lymph nodes remain unaffected. In Stage II the tumor remains respectable but the mesothelioma affects the lymph nodes. In Stage III the tumor becomes unresectable. It has penetrated through the diaphragm, or peritoneum. Stage III can occur with or without lymph involvement and extends into the chest wall and heart. Stage IV occurs when doctors discover metastatic disease involving distant organs.

After doctors identify the stage of a patient's malignant mesothelioma, the patient and doctor consider the various treatment options available. Mesothelioma treatment programs are contingent upon many factors, including the stage of the cancer, the location of the cancer, the spread of mesothelioma cancer, the characteristics of the cancer cells under a microscope and the patient's age and concerns.

About the Author:

Dave Casey is a freelance writer for Mesothelioma-Adviser.com, a comprehensive informational site on mesothelioma cancer. He hopes to expose the continued cover-up of the asbestos industry responsible for the causes of mesothelioma.

Copyright 2007 Mesothelioma-Adviser.com

Learn About Peritoneal Mesothelioma and Mesothelioma

Mesothelioma is dangerous and often painful cancer which takes place when asbestos fibers gather in the chest cavity for more time and start to damage the mesothelium. Mesothelium is a protective cover which covers the heart, lungs and abdomen. Symptoms of mesothelioma are mild or non-existent in the earlier stages of the disease.

There are three types of Mesothelioma:

- Pleural Mesothelioma

- Peritoneal Mesothelioma

- Pericardial Mesothelioma

Subtypes of mesothelioma

- Metastatic Mesothelioma

- Malignant Mesothelioma

About Peritoneal Mesothelioma:

It is an incredibly dangerous disease. It is a destructive cancer which structure in the important membrane like stomach, liver and intestines. The peritoneum, membranous layer of the mesothelium protects as well as covers several abdominal organs inclusion of the stomach, liver and intestines.

Symptoms of Peritoneal Mesothelioma:

- Swelling and abdominal pain

- Chronic diarrhea or constipation

- Stomach pain

- Loss of appetite

- Weakness and fatigue

- Vomiting and chronic nausea

- Noticeable lumps on the abdomen

- Night sweats and weight loss

Treatments of Peritoneal Mesothelioma:

Chemotherapy: In this treatment, powerful drugs are used to kill the cancerous cells and prevent them from spreading. But these drugs may also kill the healthy cells of body and bring a number of serious health side-effects to your body.

Radiation therapy: In this treatment x-rays are used to break down tumors and kill cancerous cells. Like with chemotherapy welcomes painful side effects and in this treatment there is a major chance that the radiation may also harm healthy cells.

Surgery: It is the most invasive and drastic option that removes the tumor as well as cancerous tissue. It is often used in the direst circumstances.

The Mesothelioma Law Firm, offers law services for people suffering with Peritoneal Mesothelioma and other asbestos-related illnesses - Houston, Texas.

Mesothelioma's Secondary Patients Can Learn How to Cope

When someone is diagnosed with mesothelioma they often feel helpless, sad, and perhaps even a bit desperate. That's because they have been diagnosed with a life threatening disease that has no known cure.

The patient probably knows many people who have also worked with asbestos who have contracted this terrible disease. And many of them have probably perished from it. And if they know anyone who has mesothelioma they know that it can be very painful as well.

The patient is probably also familiar with the phenomenal cost of medication and hospitalization that they and their family will have to face in the future.

Although most of the attention will be focused on the patient at the time that mesothelioma is diagnosed they are not the only victims. Their families, friends, and loved ones also are faced with the inevitable chain of events that will follow the diagnosis.

They are experiencing anger at the company that has brought this on. They know that they will have to deal with watching someone close to them face a lot of pain and suffering. They are facing the fear of losing the patient to the disease. They are concerned with the upcoming medical costs. And if the patient is still working they know that it's just a matter of time before the income from their work will have to stop.

For these reasons many healthcare professionals are now viewing the families of mesothelioma patients as secondary patients.

Mesothelioma's Secondary Patients Have to Learn to Cope

If someone who is close to you has been diagnosed with mesothelioma then you must learn to cope with the disease and its repercussions. First of all, just by being there for the patient you are doing the best thing imaginable. Your support and compassion shows the patient how much you care and eases the burden they bear.

As a victim yourself you should realize that the emotions you are experiencing are completely normal. However you should not keep your feelings to yourself. Talk with other family members about it and find a support group that you and other members of your family can turn to.

So as not to feel helpless you should learn everything you can about the disease. Ask your doctor any questions you have.

And it is important that you exercise and eat properly. You should also do things that give you a psychological break from having to deal with the disease. Make sure to spend time enjoying recreational pursuits or hobbies.

And give serious consideration to seeking financial help. If you file a lawsuit you may be able to receive mesothelioma compensation that can be used to pay for medical care, debts, and funeral costs.

And a settlement can also ensure that your family will not be left destitute when your loved one passes away.

Next, to find mesothelioma lawyers whose clients have been awarded more than a billion dollars in mesothelioma compensation, go to => http://www.mesorc.com Wendy Moyer on behalf of Sokolove Law.

Understanding and Recognizing the Symptoms of Mesothelioma

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Mesothelioma Cancer

What is Mesothelioma?

Mesothelioma is a serious malignant tumor that affects the torso of the human body. There is a strong link between mesothelioma and contact with asbestos particles via breathing or swallowing.

There are three common forms of mesothelioma:

1. Pleural Mesothelioma is the most common form of Mesothelioma. It starts in the chest cavity (after breathing the particles) before spreading to other areas.

2. Peritoneal Mesothelioma starts in the abdomen (after swallowing the particles) and accounts for about 10-20% of Mesothelioma patients.

3. Pericardial Mesothelioma is the rarest form of Mesothelioma. It starts in the cavity that surrounds the heart.

Mesothelioma is difficult to diagnose early on because the symptoms are often mistaken for those of other, less serious ailments. To make matters worse, it often takes many years for the symptoms to show up after the contact with asbestos takes place. Individuals with a history of extended asbestos exposure are at the highest risk for developing malignant mesothelioma. Even a small exposure to this cancer-causing material can result in malignant mesothelioma. However, mesothelioma has a latency of up to thirty-forty years, and many individuals previously exposed to asbestos are now displaying symptoms. This means the average age of mesothelioma patients is between 50 and 70 years. Men are typically affected more, because of the common presence of asbestos in industrial settings. There are three major types of malignant mesothelioma. Epithelial, sarcomatoid, and mixed. Epithelial mesothelioma is most common. Symptoms may include, but are not limited to respiratory distress, a lasting cough, and pneumonia. In addition, symptoms are often mistaken for less serious ailments, and many patients do not show any signs at all.

Individuals with pleural mesothelioma may amass some fluid between the lung lining and chest cavity. This can be detected through a chest x-ray, as well as CT scans.

Diagnosis of Mesothelioma is based on a biopsy. This exam will test a tissue sample for the presence of malignant and/or pleural mesothelioma.

Causes of Mesothelioma

Asbestos is the principal cause of Mesothelioma. Asbestos is a type of insulation material, which was commonly utilized in the past in the following industries:

Steel Workers

Brake Mechanics

Insulators

Boilermakers

Ship fitters

Maintenance Workers

Pipe Fitters

Construction industry

Shipbuilding industry

Automotive industry

Other manufacturing industries

Mesothelioma appears most often in people who worked in the above industries and were exposed to asbestos in their workplace. The utilization of asbestos was very prevalent after 1940's. However it would take 10-40 years after the first exposure for the first symptoms of mesothelioma to become noticeable, which made it very difficult to diagnose. The peak in mesothelioma cases is projected to be reached near year 2010 according to studies. There are three frequently used types of asbestos: white, brown, and blue. Brown and blue asbestos are more frequently associated with mesothelioma. These types of asbestos have been restricted by most countries in the 1990s. A record of asbestos exposure at work is reported in about 70 percent to 80 percent of all cases.

Asbestos is a very dangerous material and can cause serious damage to your health. It is made up of very minute fibers, which can find their way to pleura (outside lining of the lung) and damage the cells pleura are made of. These fibers can also be passed on to clothing, which makes them dangerous not only to the person exposed to asbestos, but to their family members as well.

Smoking

Smoking does not appear to increase the risk of mesothelioma. However, the combination of smoking and asbestos exposure drastically increases a person's risk of developing cancer of the air passageways in the lung.

Symptoms of Mesothelioma

Symptoms of mesothelioma may not materialize 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 because of a buildup of fluid in the abdomen. Other symptoms of peritoneal mesothelioma may include bowel obstruction, blood clotting abnormalities, anemia, and fever. If the cancer has spread beyond the mesothelium to other parts of the body, symptoms may include pain, difficulty 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 diagnosis. Once Mesothelioma is diagnosed, the likelihood of recovery varies according to several factors, including the size and location of the tumor, how much it has spread, and the age of the patient.

In general, the earlier that Mesothelioma is diagnosed, the greater the likelihood of survival. If you feel that you have experienced any of the typical Mesothelioma symptoms, pay a visit to your doctor for professional advice.

Mesothelioma diagnosis

Diagnosing mesothelioma is often complicated, because the symptoms are similar to those of several other conditions. Diagnosis begins with an assessment of the patient's medical history, as well as any history of asbestos exposure. A physical examination may be performed, including x-rays of the chest or abdomen and lung function tests. A CT (or CAT) scan or an MRI may also be useful. A CT scan is a series of detailed pictures of areas inside the body created by a computer linked to an x-ray machine. In an MRI, a powerful magnet linked to a computer is used to make detailed pictures of areas inside the body. These pictures are viewed on a monitor and can also be printed.

A biopsy is needed to confirm a diagnosis of mesothelioma. In a biopsy, a surgeon or a medical oncologist (a doctor who specializes in diagnosing and treating cancer) removes a sample of tissue for examination under a microscope by a pathologist. A biopsy may be done in different ways, depending on where the abnormal area is found. If the cancer is in the chest, the doctor may perform a thoracoscopy. In this procedure, the doctor makes a small cut through the chest wall and puts a thin, lit tube called a thoracoscope into the chest between two ribs. Thoracoscopy allows the doctor to look inside the chest and obtain tissue samples. If the cancer is in the abdomen, the doctor may perform a peritoneoscopy. To obtain tissue for examination, the doctor makes a small opening in the abdomen and inserts a special instrument called a peritoneoscope into the abdominal cavity. If these procedures do not yield enough tissue, more extensive diagnostic surgery may be necessary.

If the diagnosis is mesothelioma, the doctor will want to learn the stage and extent of the disease. Staging involves more tests in a precise effort to find out whether the cancer has proliferated and, if so, to which parts of the body. Knowing the stage of the disease helps the doctor plan treatment. Mesothelioma is described as localized if the cancer is found only on the membrane surface where it originated. It is classified as advanced if it has extended beyond the original membrane surface to other parts of the body, such as the lymph nodes, lungs, chest wall, or abdominal organs.

Mesothelioma treatment

Treatment for mesothelioma depends on the location of the cancer, the stage of the disease, and the patient's age and general well being. Typical treatment options consist of surgery, radiation therapy, and chemotherapy. Sometimes, these treatments are combined.

Surgery is a frequent treatment for mesothelioma. The doctor may remove part of the lining of the chest or abdomen and some of the tissue around it. For cancer of the pleura (pleural mesothelioma), a lung may be removed in an operation called a pneumonectomy. Sometimes part of the diaphragm, the muscle below the lungs that helps with breathing, is also removed.

Radiation therapy involves the use of high-energy rays to kill cancer cells and shrink tumors. Radiation therapy affects the cancer cells only in the treated area. The radiation may come from a machine (external radiation) or from moving materials that produce radiation through thin plastic tubes into the area where the cancer cells are found (internal radiation therapy).

Chemotherapy is the use of anticancer drugs to kill cancer cells throughout the body. Most drugs used to treat mesothelioma are given by injection into a vein (intravenous, or IV). Doctors are also studying the effectiveness of applying chemotherapy directly into the chest or abdomen (intracavitary chemotherapy).

To ease symptoms and control discomfort, the doctor may use a needle or a thin tube to drain fluid that has accumulated in the chest or abdomen. The procedure for removing fluid from the chest is called thoracentesis. Removal of fluid from the abdomen is called paracentesis. Drugs may be administered through a tube in the chest to prevent more fluid from accumulating. Radiation therapy and surgery may also be beneficial in alleviating symptoms.

Note of Urgency

Mesothelioma is a life-threatening disease and cannot be left untreated. The sooner it is diagnosed the better a patient's chances are of fighting this deadly cancer. Please contact a qualified doctor immediately if you or someone you know has been diagnosed with mesothelioma.

Read more Facts about Mesothelioma. Alan Hood is a contributing writer at Houston Medical Center

Mesothelioma Treatment - How Does the Stage of Tumor Affect the Mode of Treatment For Mesothelioma?

The stage (extent) of a mesothelioma is an important factor in determining treatment options. Treatment option used is also based on the patients state of general health and individual preferences. The stage of the tumor most importantly helps to determine whether the tumor is resectable {operable} or not.

Mesotheliomas are very resistant to treatment irrespective of their stage and it is always very important for the patient to know the goal of his or her own treatment before it is commenced, the patient should know whether the aim of the treatment plan is curative or whether it is palliative. The patient must also be informed about the likely side effects and benefits of the treatment. All these will help the patient to make up his/her mind on the preferred mode of treatment.

Early Stage Mesothelioma

Most stage I and some stage II and III mesotheliomas are potentially resectable, but there are exceptions. Resectability is based not only on the size of the tumor, but also on the histological {cellular type} of the cancer with the epitheliod histological type been the most favorable for surgery. Also the location of the tumor and the general state of health of the victim are also considered before surgery is recommended.

Many patients with resectable pleural mesothelioma undergo pleurectomy/decortication or extrapleural pneumonectomy operations to surgically remove their tumors. Patients with peritoneal mesotheliomas in an early stage might also benefit from surgery. Surgery is more likely to result in long-term benefit in stage I cancers, where there is a better chance that most or all of the cancer can be removed. Some patients can have long remissions after extensive surgery by experts. Surgery may still be helpful for later stage cancers, but the benefits are often temporary.

The use of Chemotherapy and radiotherapy as adjuvant therapy to surgery is also very common, they may also be used as the main therapy in early stage of the tumor if the tumor is not operable due to a poor general state of health.

Other forms of surgery for palliative purposes like thorancentesis can also used to alleviate symptoms in the early stages of the cancer.

Finally a patient can also opt to take part in a clinical trial to help to discover new forms of treatment.

Late Stage Mesothelioma

Stage IV mesotheliomas, as well as many earlier stage mesotheliomas, are not resectable by surgery because of the extent of the disease or because a person may not be able to tolerate an operation. The main treatment options at these stage include chemotherapy and radiotherapy to shrink the tumor mass and relieve some of the symptoms of the diseases. The aim of treatment at this stage is not curative and these modes of treatments have serious side effects which the patient must be aware of. Patient should also consider taking part in available clinical trials as there is little hope of survival using the conventional methods of treatment.

Pain management is another important aspect of the care of terminally ill patients. Some minor operations and types of radiation therapy can help relieve pain if needed. Doctors can also prescribe strong pain-relieving drugs. Some people with cancer may hesitate to use opioid drugs (such as morphine) for fear of being sleepy all the time or becoming addicted to them. But many people get very effective pain relief from these medicines without serious side effects. It's very important to let your doctor know if you are having pain so that it can be treated effectively.

Recurrent mesotheliomas

Some mesotheliomas may recur (come back) after the initial treatment. If this happens, further treatment options depend on the location of the cancer and the kind of treatment that was previously prescribed for the patient. Most of the time treatment is limited only to palliative treatments. Chemotherapy could be used to shrink the tumor and provide relief for symptoms. Clinical trials should be highly considered as there is very little hope of any improvement with the use of traditional treatments.

Bello Kamorudeen. For more information on mesothelioma and mesothelioma treatment visit http://www.mesotheliomacorner.blogspot.com

The Truth About Malignant Mesothelioma, Pleural Mesothelioma and Peritonial Mesothelioma

Malignant mesotheliomais is a relatively uncommon form of cancer that is caused by exposure to asbestos, usually in the workplace. It affects the mesothelial cells that line three of the body's largest cavities surrounding the lungs, heart and abdomen and is an aggressive form of cancer. Pleural mesotheliomais is the most common form of mesothelioma, accounting for approximately 75% of all mesothelioma cases.

Found between the lungs and the chest cavity, the pleura is a thin membrane that provides a lubricated surface so that the lungs can maneuver easily against the chest walls while breathing. The pleura also serves as a protective layer. Pleural mesothelioma is often incorrectly described as a form of lung cancer due to the pleura's close proximity to the lungs.

The second most common type of mesothelioma is peritoneal mesothelioma. This form accounts for approximately between 10-20% of all mesothelioma cases, or mesothelioma of the peritoneum. The peritoneum is a thin serous membrane that encapsulates the organs of the abdomen.

While peritoneal mesothelioma is not as common as pleural mesothelioma, it tends to be much more invasive and aggressive, typically yielding a shorter life expectancy for diagnosed patients. Pericardial mesothelioma is a lesser known form of the disease, accounting for less than 10% of all mesothelioma cases, or mesothelioma of the pericardium. The pericardium is the membrane that protects your heart, also referred to as the heart sac. The rarest form of mesothelioma is called tunica vaginalis testis and can originate in the lining surrounding the testicles.

Asbestos exposure is the only known cause of mesothelioma. Typically the result of occupational duties, mesothelioma can result from brief exposure to asbestos fibers. It has been determined that the dangers associated with working with asbestos have been known for over seventy years; however, employers chose to keep this knowledge disclosed for fear that it could have a negative impact on profitability. Even in this day and age, employees are often not properly notified that asbestos could be present in their working surroundings. This can result in any number of asbestos related diseases including the most serious, malignant mesothelioma.

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