What Is Mesothelioma?
Mesothelioma the medical name for cancer of the pleura (the lining of the lung and chest cavity) or cancer of the peritoneum (the lining of the abdomen). It is usually caused by prolonged or persistent exposure to asbestos.
Symptoms of mesothelioma may not appear until between twenty and fifty years after exposure, which explains why so many new cases of this form of cancer are coming to light now, even though the dangers of asbestos were realized long ago and measures taken to reduce the risk of the disease.
As with many forms of cancer, the mesothelioma tumor can spread rapidly, often infecting the opposite pleura, and continuing on to other internal organs. Symptoms include a shortness of breath, chest pains, coughing, and loss of weight.
Testing can be carried out initially by X-Ray, with a Thoric CT and open lung biopsy being used to confirm the findings of the early tests. If it is diagnosed early enough, the tumor can be surgically removed, and with follow-up chemotherapy and radiation treatment, full recovery is often possible.
However, in more advanced cases, cure is usually not possible. In such cases, chemotherapy and radiation treatment can be used alongside other pain relief treatments, to ease the symptoms. Where cure is not possible, the average survival time is between four and eighteen months, depending on the stage of the tumor and the general health of the patient.
Mesothelioma Cancer
Mesothelioma is a type of cancer involving mesothelial tissues of body organs usually lungs or abdominal. It is often caused by exposure to asbestos. However, there are 30-50% of patients without any history of asbestos exposure. People who have received asbestos exposure of as little as one or two months to very low doses are at risk of mesothelioma cancer. Even people who wash clothes of asbestos exposed people are at risk. A person exposed to asbestos could develop mesothelioma after 50 years of exposure.
People in the occupations such as construction jobs in shipyards, insulators, boilermakers, etc. are at the risk of contracting asbestos disease.
The 2 common types of mesothelioma are:
Pleural mesothelioma (lung cancer) and Peritoneal mesothelioma (abdomen organs).
The survival time for a patient with diffuse malignant mesothelioma is from 4 to 24 months from the observance of the symptoms. Mesothelioma is also difficult to diagnose.
The chance of recovery for a patient with mesothelioma depends on size and location of the cancer, age of the patient and his response to the treatment.
Presently, the treatment options for mesotheliomas are:
There is some evidence that provitamin A or beta-carotene may decrease the risk of mesothelioma. |
Who is at Increased Risk For Developing Mesothelioma?
Since the late 1800's Asbestos has been mined and used commercially. The use of Asbestos dramatically increased during World War II and since the early 1940's millions of Americans have been exposed to asbestos dust working within industries where initally the risks were not known. There has been widespread exposure to Asbestos by workers within shipyards, mines and mills, producers of asbestos products, workers in the heating and construction industries, and other tradespeople and an increase risk of deveolping mesothelioma has been the result. .
Today, the U.S. Occupational Safety and Health Administration (OSHA) sets limits for acceptable levels of asbestos exposure in the workplace. By contrast, the British Government's Health and Safety executive (HSE) states formally that any threshold for mesothelioma must be at a very low level and it is widely agreed that if any such threshold does exists at all, then it cannot currently be quantified. For practical purposes, therefore, HSE does not assume that any such threshold exists. People who work with asbestos wear personal protective equipment to lower their risk of exposure.
The risk of asbestos-related disease increases with heavier exposure to asbestos and longer exposure time. However, some individuals with only brief exposures have developed mesothelioma. On the other hand, not all workers who are heavily exposed develop asbestos-related diseases. Family members and others living with asbestos workers have an increased risk of developing mesothelioma, and possibly other asbestos-related diseases. This risk may be the result of exposure to asbestos dust brought home on the clothing and hair of asbestos workers.
To reduce the chance of exposing family members to asbestos fibers, asbestos workers are usually required to shower and change their clothing before leaving the workplace.
The combination of smoking and asbestos exposure significantly increases a person's risk of developing cancer of the air passageways in the lung. The Kent brand of cigarettes used asbestos in its filters for the first few years of production in the 1950s and some cases of mesothelioma have resulted. Smoking current cigarettes does not appear to increase the risk of mesothelioma.
There is no curative treatment. Close monitoring (routine X-rays or even pleural biopsy) for mesothelioma is mandated. Oxygen therapy at home is often necessary to relieve the shortness of breath. Supportive treatment of symptoms includes respiratory treatments to remove secretions from the lungs by postural drainage, chest percussion, and vibration. Aerosol medications to thin secretions may be prescribed
How Is Mesothelioma Treated?Most people who develop mesothelioma have worked on jobs where they inhaled asbestos particles. However, they may have been been exposed to asbestos dust and fibre in other ways. This could include working with asbestos or by home renovation using asbestos cement products or even by washing the clothes of a family member who worked with asbestos. The resulting disease is rare form of cancer in which malignant (cancerous) cells are found in the mesothelium, a protective sac that covers most of the body's internal organs.
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. About 2,000 new cases of mesothelioma are diagnosed in the United States each year. Although reported incidence rates have increased in the past 20 years, mesothelioma is still a relatively rare cancer.
There are various procedures used for the treatment of mesothelioma. The type of treatment depends on the location of the cancer, the stage of the disease, and the patient's age and general health.
A common treatment of the disease is by means of surgery by the removal of part of the lining of the chest or abdomen and some of the tissue around it. For cancer of the pleura, 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.
Another method is Radiation therapy, also called radiotherapy. This 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 or from putting materials that produce radiation through thin plastic tubes into the area where the cancer cells are found .
Anticancer drugs can be used to kill cancer cells throughout the body. This is known as chemotherapy and involves the administration of the drugs by injection into a vein (intravenous, or IV). Currently, doctors are also studying the effectiveness of putting chemotherapy directly into the chest or abdomen.
Because mesothelioma is very hard to control, the U.S. National Cancer Institute (NCI) is sponsoring clinical trials that are designed to find new treatments and better ways to use current treatments.
Mesothelioma - The Largest Man Made EpidemicIt is documented that Australia had the highest per capita use of asbestos in the world from the 1950's until the 1970's. As a tragic consequence, Australia now has the highest per capita incidence of mesothelioma in the world. With more than 500 Australians contracting mesothelioma per year, it is estimated that up to 18,000 Australians will die from this asbestos related cancer by the year 2020.
Despite the growing awareness of the dangers of asbestos, there are many people who have not heard of Mesothelioma. This asbestos related cancer is defined as: a malignant spreading tumor of the mesothelium of the pleura, pericardium, or peritoneum, arising form the inhalation of asbestos fibers.
One of the most baffling and frightening known facts concerning Mesothelioma is that many years may pass, between inhalation of asbestos dust and its deadly legacy of disease; it is not uncommon for four decades or more to pass before symptoms due to asbestos dust inhalation become apparent.
In November 2004, I was an invited speaker at the Global Asbestos Congress 2004, held in Tokyo Japan. Over 800 participants from 40 countries around the world were in attendance. To be a part of such a large gathering of fellow humans, united in a quest to rid the poison of asbestos from our environments was an intensely moving experience. Having lost my husband to mesothelioma I know first hand the suffering this cruel disease places on its innocent victims.
There were many speakers and each told a tale, of pain, death and heartache. We listened, we understood and we ached for the past, present and future victims of the killer asbestos and its legacy of mesothelioma and other asbestos related diseases. We listened and we were shocked and angered to learn that despite the growing awareness of the dangers of asbestos and the increasing incidence of asbestos related disease, there remains some countries who are mining asbestos with little or no regard for their workers or people who will come into contact with asbestos products.
Asbestos disease Association member's world wide are working tirelessly and fighting almost insurmountable odds to ban asbestos from all countries of the world. It is a sobering and frightening fact, that even if we were successful today in this quest, the legacy of asbestos related diseases will continue for five decades.
Add your voice to the many who want this killer product erased from the worlds environments ? Add your voice to the call that pleads for adequate compensation for victims and their families. Sign the online petition at Asbestos Disease Awareness Organization:
The Asbestos Disease Awareness Organization (ADAO) continues to raise public awareness about the dangers of asbestos exposure and the incurable and often deadly asbestos related diseases. ADAO is quickly expanding and uniting veterans, fire-fighters, shipbuilders, teachers and thousands of other innocent people around the world. Asbestos Awareness leads to education, prevention, new treatments and ultimately a cure.Protect Against Mesothelioma by Avoiding Asbestos
Mesothelioma is a rare cancer that attacks the body's mesothelial cells around the organs. The mesothelium provides a protective membranous lining for the internal organs and allows moving organs (i.e. the heart and the lungs) to glide easily against adjacent structures. The names of the three regions of mesothelial cells that provide protective coating are 1) pleura, the sac which surrounds the lungs; 2) peritoneum, the lining which protects the abdominal cavity; and 3) pericardium, the sac which surrounds the heart. Three different types of mesothelioma cancer attack these three different regions.
Pleural mesothelioma: A type of lung cancer which attacks the pleura surrounding the lungs, this is the most common type of mesothelioma, affecting approximately two-thirds of all mesothelioma patients. Symptoms include horseness, fever, blood in sputum, swollen arms and face, coughing, loss of weight, difficulty breathing, chest pain, weak muscles, and reduced tactile sensitivity.
Peritoneal mesothelioma: A cancer of the abdomen which attacks the peritoneum lining the abdominal cavity. This affects approximately one-third of all mesothelioma patients. Symptoms include abdominal bloating, impaired bowl function, fever, swollen feet, and nausea.
Pericardial mesothelioma: This form of mesothelioma which attacks the pericardium surrounding the heart is extremely rare. Symptoms include chest pain, dyspnea, cough, and palpitations.
Mesothelioma has been linked to asbestos exposure. Asbestos is a type of building material used in thermal insulation products and ceiling tiles. In the United States, asbestos usage peaked during the 1950s - 1970s. During the late 1960s, concerns over the health consequences of asbestos exposure began to arise, thereby decreasing the amount of asbestos manufactured in next two decades. By the 1980s, a new industry of asbestos abatement began to flourish. But according to the United States Environmental Protection Agency (EPA), as many as 733,000 schools and public buildings still contain asbestos.
Small asbestos fibers that enter the air do not evaporate and can remain suspended in the air for a long time. These fibers, when breathed into the body, are toxic. There are three types of asbestos exposure.
Occupational asbestos exposure: People working in factories that manufacure asbestos are likely to have a high exposure to asbestos and are most at risk of developing asbestosis or mesothelioma.
Paraoccupational asbestos exposure: Family members of workers exposed to asbestos in the workplace are susceptible to exposure from asbestos dust brought home by the worker on his clothes or skin.
Neighborhood asbestos exposure: Those who live in the vicinity of an asbestos manufacturing plant are also at risk.
Mesothelioma is still a relatively rare form of cancer. There are an estimated 2,000 - 3,000 new cases per year in the United States. Approximately 7-13 per one million male patients with a history of asbestos exposure contract mesothelioma. Diagnosis usually occurs 20-40 years after initial exposure to asbestos.
