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Printer Friendly Page Frequently Asked Questions Asbestosis Asbestosis is, as its name suggests, caused by inhalation of asbestos fibers (asbestos installers) asbestos roof removal It is not a cancerous lung disease (asbestos installers) asbestos roof removal The underlying disease process of asbestosis is not yet fully understood, but it appears that asbestos fibers in the lungs cause irritation and inflammation (asbestos installers) asbestos roof removal The body attempts to neutralize these foreign fibers in various complex ways, and some or all of these processes lead to further inflammation and cell damage. Eventually a fibrosis or scar tissue develops in the interstitial spaces around the small airways and alveoli. This thickening and scarring prevents oxygen and carbon dioxide from traveling between the alveoli and the blood cells, so breathing becomes much less efficient. Asbestosis often exists without any symptoms, and is then detected only by x-ray findings. However, the symptoms of asbestosis typically include shortness of breath and coughing. As the disease progresses, the symptoms can worsen. It can be a progressive disease, meaning that it continues to progress even after exposure to asbestos has stopped. In unusual cases it can be fatal. The scarring and thickening can be seen on x-rays and CT scans. Also, if it reduces the functioning of the lungs, asbestosis can be detected by a breathing or pulmonary function test (PFT.) Diagnosis can be made only when there is a history of asbestos exposure and positive results from a clinical exam, chest x-rays, CT scans, and/or a pulmonary function test (PFT.) It can also be conclusively identified through a biopsy; click on A, B and C to see three microscopic slides of asbestos fibers lodged in the lungs. Asbestosis affects both lungs (it is bilateral) and, although it is mainly in the lower fields of the lungs, it is usually widespread (diffuse.) Serious asbestosis is usually caused by heavy exposure to asbestos, such as sustained exposure over a period of years (e.g. a longtime worker at an asbestos

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