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					Incidence and epidemiology of Mesothelioma
Before 1960, the existence of mesothelioma as a
distinct pathological entity was still debated.
Nowadays, about 70-80 % of case of
mesothelioma are associated with documented
asbestos exposure and there are report that cases
due to exposure in buildings with asbestos
insulation seem to be extremely rare, so
mesothelioma or malignant mesothelioma now are
well recognized as being associated with
asbestos exposure.
There are many information about the incidence of
mesothelioma which are conflicts. The variation of
the data still depend on the chance to expose
asbestos in that population
Some data suggest that about 3000-4000 new
cases of mesothelioma are seen annually in the
United States and the annual incidences increase
by 3 fold for males and 1.5 fold for females
compared with unexposed population.
Some data suggest that the incidence of malignant
mesothelioma shows marked variations from one
country to another. Example, the incidence of
mesothelioma in Australia is 30 case per million
while the incidence of mesothelioma in Cyprus is 9
case per million.
In many countries, the incidence data are not
available so to estimate the incidence the
researchers use the mortality rate instead.

In some data, the incidence is estimated from the
experiences of researchers and physicians who
operate that research.
But in the information that match together, the
incidence of mesothelioma is geographical
different according to the regional difference of
industrial activity and the type of asbestos that use
in that activity or production.
Malignant mesothelioma is seen more commonly
in male than in female. Furthermore, the incidence
increase with age and the mean of age at clinical
presentation is greater than 60 years because
mesothelioma has long latency period to develop
disease and clinical presentation.
The risk of mesothelioma is greater in people who
work in the mine, ship yards or associated with
those places. However, mesothelioma has been
reported as a consequence of household exposure
among family members of asbestos workers ship
yards workers and in young adults as a
consequence of household or neighborhood
exposure.
The number of asbestos-exposed people rose
throughout most of the 20th century as a result of
increased mining and the use of asbestos. Despite
a large number of exposed people, Mesothelioma
is a cancer that is still fairly rare compared to other
cancer.

				
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posted:7/25/2011
language:English
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Description: mesothelioma