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The biology of cancer has important implications for cancer
control. At the cellular level the problem is faulty genetic
control; cancer is basically a genetic disorder. But hereditary
cancers such as retinoblastoma, are uncommon. Instead the disease
is usually acquired from external influences which are, therefore,
potentially avoidable.
With current methods overall one can expect to prevent
theoretically 2/3 but in practice more realistically 1/3 of cancer,
and to be able to cure about 1/3 in a developing country, and
closer to 1/2 in a developed country.
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