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Cancer survival rates vary by the type of cancer, stage at diagnosis, treatment given and many other factors, including country. In general survival rates are improving, although more so for some cancers than others. Survival rate can be measured in several ways, median life expectancy having advantages over others in terms of meaning for people involved, rather than as an epidemiological measure.〔Macmillan report on median survival times. November 2011.〕 Several types of cancer are associated with high survival rates, including breast, prostate, testicular and colon cancer. Brain and pancreatic cancers have much lower median survival rates which have not improved as dramatically over the last forty years.〔Cancer survival figures issued by the Office of National Statistics, 26 May 2011 (UK)〕 Indeed, pancreatic cancer has one of the worst survival rates of all cancers. In cancer types with high survival rates, incidence is usually higher in the developed world, where longevity is also greater. Cancers with lower survival rates are more common in developing countries.〔United Nations Global Cancer Research〕 The five-year survival rate for breast cancer is 26% according to Cancer Centers of America's website. Small cell lung cancer has a five-year survival rate of 4% according to Cancer Centers of America's Website.〔http://www.cancercenter.com/lung-cancer/statistics/〕 ==See also== * Cancer prevalence * Cancer survivor 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Cancer survival rates」の詳細全文を読む スポンサード リンク
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