Tuberculosis incidence rate was increased in workers exposed to some form of nickel, chromium, and asbestos. Asbestos is widely used as roof-making materials (tiles) and insulation, asbestos cement, brake linings, electrical devices, and fire-resistant materials and packaging materials. Asbestos is the common name of a group of natural silicates which will split into flexible fibers. Exposure can come from natural sources and industrial usage. There are two types of fiber flcksibel, krisotil and krosidolit. Krisotil (3MgO.2SiO, .2 H2O) is a very important species in world trade and 90% of it consists of asbestos.
Krosidolit (blue asbestos), composed of rod-shaped fibers are short and more dangerous than krisotil fibers.
System disease caused by exposure to asbestos exposure include asbestosis, lung cancer, and mesotelioma. Other cancers associated with exposure to asbestos is a cancer of the larynx, esophagus, stomach, colon-rectum, and possibly pancreatic cancer.
Asbestosis is pulmonary fibrosis that developed slowly due to inhaling asbestos dust due to high concentration or long exposure. Severity depends on the time span between awitan (initial) exposure and its intensity, and asbestosis is often associated with advanced lung cancer, especially among smokers.
Mesotelioma is a rare type of pleural cancer. Increasing incidence mesotelioma associated with inhalation of asbestos fibers in the working environment. Although initially symptoms slightly, mesotelioma curable if successfully diagnosed. The time between exposure to asbestos and the occurrence of the first signs of tumors ranging from 20 to 50 years, specializing mesotelioma. The increase in incidence rate mesotelioma also seen in the population who, although not exposed in occupational, household living with asbestos workers or live around a strong source of asbestos emissions Although asbestos is no longer used as an insulator, this substance is still in the spotlight because of bahaya coming from the building sekatnya use of asbestos.
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