asbestos-related_disease_indicators.doc

There are three main types of mesothelioma which are

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onset usually results in a survival period following diagnosis of only 6 to 18 months. There are three main types of mesothelioma which are named according to where the cancer occurs in the body; mesothelioma of the pleura (chest), peritoneum (abdomen) and pericardium (heart). Pleural mesothelioma is the most common form (representing 94% of cases of mesothelioma since 1982), followed by peritoneal and pericardial. Mesothelioma can also develop in other parts of the body, such as the reproductive organs: but these types are more uncommon (CC V 2010). New cases Australia has one of the highest incidence rates of mesothelioma in the world. This can largely be attributed to the extensive use of all types of asbestos fibres in various settings in the past (Leigh & Driscoll 2002). Despite the comparatively high rates of diagnosis and death, mesothelioma is still a relatively rare condition: accounting for 0.6% of all cancers diagnosed in Australia in 2006. Mesothelioma is a disease that most often occurs among older people, mainly because of the long latency period between exposure to asbestos and the development of the disease. However, there have been 25 cases of mesothelioma diagnosed in people aged under 30 over the period 1982 to 2006. Figure 1 Number of new cases of mesothelioma by sex, 1982 to 2006 Source: AIHW Australian Cancer Incidence and Mortality Books (compiled by AIHW from data supplied by state and territory cancer registries). 3 ... Safe Work Australia 0 1 0 0 2 0 0 3 0 0 4 0 0 5 0 0 6 0 0 7 0 0 1 9 8 2 1 9 8 3 1 9 8 4 1 9 8 5 1 9 8 6 1 9 8 7 1 9 8 8 1 9 8 9 1 9 9 0 1 9 9 1 1 9 9 2 1 9 9 3 1 9 9 4 1 9 9 5 1 9 9 6 1 9 9 7 1 9 9 8 1 9 9 9 2 0 0 0 2 0 0 1 2 0 0 2 2 0 0 3 2 0 0 4 2 0 0 5 2 0 0 6 Y e a r o f d i a g n o s i s N u m b e r o f n e w c a s e s T o t a l M a l e s F e m a l e s
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New cases per 100 000 population Figure 2 New cases of mesothelioma: age-standardised incidence rate by sex, 1982 to 2006 7 6 Males 5 4 Total 3 2 Females 1 0 Year of diagnosis Note: Age-standardisation is a method used to improve comparability of data over time. Source: AIHW Australian Cancer Incidence and Mortality Books (compiled by AIHW from data supplied by state and territory cancer registries). Figure 1 shows there was an upward trend in the total number of new cases of mesothelioma diagnosed: from 156 in 1982 to 649 in 2003. Since then, the number of new cases has decreased to 579 in 2006. Although this decrease is promising, it is too early to identify it as a turning point. Several studies have predicted that the number of cases of mesothelioma diagnosed each year in Australia will continue to rise until after 2010 (Clements et al., 2007a). Men are more likely to be diagnosed with mesothelioma than women: they accounted for an average of 86% of cases since 1982. Figure 2 shows the age-standardised incidence of new cases of mesothelioma (per 100 000 population) over the period 1982 to 2006. The overall incidence rate increased over the period: from a minimum of 1.1 new cases per 100 000 population in 1983 to a maximum of 3.2 in 2003. Since that date, the rate declined slightly: to 2.8 and 2.7 in 2005 and 2006 respectively.
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