Asbestos Types
Individuals who don’t know a lot about asbestos but have heard much about its many dangers may be surprised to learn that asbestos is a natural substance, found in various places on the planet, not a man-made substance developed for commercial use. Indeed, asbestos is mined in many countries throughout the world and was, at one time, widely used in many commercial products, usually for a number of reasons including its high resistance to heat and chemicals, its low electrical conductivity, and its strength and flexibility.
This natural material was first used in 1828 as a lining material for steam engines. For many years, vinyl-asbestos tiles were used for floor coverings and automobile clutch facings and brake linings also contained asbestos. Alarmingly, asbestos was even used in toothpaste, as artificial snow for Christmas trees, and as incision thread for surgery patients.
A total of six different types of asbestos are found in the earth and they’re categorized into two separate groups: 1) serpentine, with a layered form and curly fibers, and 2) amphibole, with straight fibers and a chain-like structure. The latter has been determined to be the most dangerous type of asbestos to which human beings can be exposed.
The serpentine group has just one member…Chrysotile. This is the most common type of asbestos, still found in buildings in nearly every developed country throughout the world. As a matter of fact, figures show that between 90% and 95% of all asbestos found in buildings and other commercial products that contain asbestos is of the Chrysotile variety. Furthermore, this is the only type which is still mined, primarily in Canada, Africa, and the former Soviet Republic. Because of its rampant use, Chrysotile accounts for most asbestos-related health problems.
Chrysotile is usually white or green in color and is most often used in insulation and fireproofing products. It can also be woven into asbestos tapes and clothes and is used in the manufacture of cement in the form of sheets, shingles, and pipes.
This type of asbestos is also used in a number of friction materials, largely due to its high resistance to heat. These products include automobile brake shoes, disk pads, clutches and elevator brakes. In addition, roof sealants, textiles, plastics, rubbers, door seals for furnaces, high temperature caulking, paper, and components for the nuclear industry contain Chrysotile.
Five kinds of asbestos are members of the amphibole variety. Only two of them were consistently used in commercial applications – Amosite and Crocidolite. These two forms, possessing strong and stiff fibers, are highly dangerous when airborne fibers are inhaled or ingested.
The commercial production of Amosite, also known as “brown asbestos”, was halted within the last decade. Most often used as an insulating material, the use of Amosite has been banned in most countries for several decades. However, at one time, it was the second most-commonly used type of asbestos, accounting for about 5% of the asbestos used in factories and buildings and was sometimes included for anti-condensation and acoustical purposes.
Crocidolite is a rare form of asbestos, bluish in color, and is highly resistant to chemicals. It’s believed to be the most lethal form of asbestos and was often used as a reinforcement material for plastics. In the mid-twentieth century, Crocidolite was also used in pre-formed thermal insulation and, prior to that, some yarns and rope lagging contained this form of asbestos.
Though the use of most asbestos products has long been banned in most developed countries, many buildings may still contain some form of this dangerous mineral. To learn more about the various types of asbestos and their uses, be sure to sign up for a free information packet, available from this site.
Sunday, January 28, 2007
Monday, January 1, 2007
Peritonial Mesothelioma
Peritonial Mesothelioma
Peritoneal Mesothelioma is the second-most prevalent form of asbestos-related cancer, rarer than the pleural variety, and accounting for about 10% - 15% of all diagnosed Mesothelioma cases. This form of cancer affects the lining of the abdomen, known as the peritoneum.
Doctors and researchers offer two theories as to how asbestos fibers are able to enter the peritoneum. Some believe that the fibers are caught and held by the mucus in the trachea or bronchi and ultimately swallowed. The second explanation notes that fibers lodged in the lungs may move into the lymphatic system and be transferred to the peritoneum.
Regardless of which explanation is correct, peritoneal Mesothelioma can be quite difficult to detect, as the cancer may lay dormant for many years. Like all types of asbestos-related cancers, documented incidences show that this type has, at times, been dormant for up to four decades. That, of course, makes it all the more difficult to treat this disease because, by the time it’s detected, it has reached its advanced stages.
The symptoms of peritoneal Mesothelioma are non-specific and can often be mistaken as indicators of a much less serious disease. Therefore, it’s important to let medical professionals know that the patient has been exposed to asbestos in the past. Symptoms of this type of Mesothelioma might include:
Abdominal pain
Abdominal swelling due to fluid accumulation
Weight loss
Loss of appetite
Weakness
Nausea
Bowel obstruction
Breathing difficulties
Location of the tumor will determine which symptoms are present and/or most severe and symptoms may be different according to the patient’s general health and age.
Often, the diagnosis of peritoneal Mesothelioma is accidental, perhaps discovered during an x-ray for another ailment. Additional x-rays, CT scans, or MRIs may be ordered but, ultimately, a tissue biopsy will be the most conclusive test.
Once this type of Mesothelioma is diagnosed, treatment options will be discussed. While there is currently no cure for this disease, the patient can be treated in a variety of ways to help ease symptoms, reduce pain, and prolong life. Options include:
Surgery – the surgery performed for peritoneal Mesothelioma may involve cutting out part of the lining and tissue from the abdominal area in order to remove the tumor. If the tumor is particularly large, a lung or a section of the diaphragm may need to be removed as well. Because this type of cancer is so often diagnosed in its late stages, surgery may not be an option as the cancer has already spread too much by this point.
Chemotherapy – the use of intra-peritoneal chemotherapy is often recommended to patients with peritoneal Mesothelioma. This involves the infusion of chemotherapy drugs directly into the abdominal cavity. It can be used after surgery or on its own.
Radiation therapy – radiation may be targeted directly at cancer cells or can be used for palliative reasons such as to reduce pain or shortness of breath or to control the spread of the tumor.
Clinical trials – some patients choose to participate in clinical trials or employ the use of therapies that have not yet been deemed successful in treating the disease, such as gene therapy or immunotherapy.
Although peritoneal Mesothelioma is not the most prevalent form of asbestos-related cancer, it is indeed a serious problem and many people die each year from the disease. If you, a friend, or a loved one has been diagnosed with this or any other type of asbestos-related cancer, learn about your options and rights by ordering our free Mesothelioma Resource Kit, full of information on the disease, its treatments, and the legal options of an asbestos-related cancer victim.
Peritoneal Mesothelioma is the second-most prevalent form of asbestos-related cancer, rarer than the pleural variety, and accounting for about 10% - 15% of all diagnosed Mesothelioma cases. This form of cancer affects the lining of the abdomen, known as the peritoneum.
Doctors and researchers offer two theories as to how asbestos fibers are able to enter the peritoneum. Some believe that the fibers are caught and held by the mucus in the trachea or bronchi and ultimately swallowed. The second explanation notes that fibers lodged in the lungs may move into the lymphatic system and be transferred to the peritoneum.
Regardless of which explanation is correct, peritoneal Mesothelioma can be quite difficult to detect, as the cancer may lay dormant for many years. Like all types of asbestos-related cancers, documented incidences show that this type has, at times, been dormant for up to four decades. That, of course, makes it all the more difficult to treat this disease because, by the time it’s detected, it has reached its advanced stages.
The symptoms of peritoneal Mesothelioma are non-specific and can often be mistaken as indicators of a much less serious disease. Therefore, it’s important to let medical professionals know that the patient has been exposed to asbestos in the past. Symptoms of this type of Mesothelioma might include:
Abdominal pain
Abdominal swelling due to fluid accumulation
Weight loss
Loss of appetite
Weakness
Nausea
Bowel obstruction
Breathing difficulties
Location of the tumor will determine which symptoms are present and/or most severe and symptoms may be different according to the patient’s general health and age.
Often, the diagnosis of peritoneal Mesothelioma is accidental, perhaps discovered during an x-ray for another ailment. Additional x-rays, CT scans, or MRIs may be ordered but, ultimately, a tissue biopsy will be the most conclusive test.
Once this type of Mesothelioma is diagnosed, treatment options will be discussed. While there is currently no cure for this disease, the patient can be treated in a variety of ways to help ease symptoms, reduce pain, and prolong life. Options include:
Surgery – the surgery performed for peritoneal Mesothelioma may involve cutting out part of the lining and tissue from the abdominal area in order to remove the tumor. If the tumor is particularly large, a lung or a section of the diaphragm may need to be removed as well. Because this type of cancer is so often diagnosed in its late stages, surgery may not be an option as the cancer has already spread too much by this point.
Chemotherapy – the use of intra-peritoneal chemotherapy is often recommended to patients with peritoneal Mesothelioma. This involves the infusion of chemotherapy drugs directly into the abdominal cavity. It can be used after surgery or on its own.
Radiation therapy – radiation may be targeted directly at cancer cells or can be used for palliative reasons such as to reduce pain or shortness of breath or to control the spread of the tumor.
Clinical trials – some patients choose to participate in clinical trials or employ the use of therapies that have not yet been deemed successful in treating the disease, such as gene therapy or immunotherapy.
Although peritoneal Mesothelioma is not the most prevalent form of asbestos-related cancer, it is indeed a serious problem and many people die each year from the disease. If you, a friend, or a loved one has been diagnosed with this or any other type of asbestos-related cancer, learn about your options and rights by ordering our free Mesothelioma Resource Kit, full of information on the disease, its treatments, and the legal options of an asbestos-related cancer victim.
Subscribe to:
Posts (Atom)