Global estimates of cancer prevalence for 27 sites in the adult population in 2008

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Abstract

Recent estimates of global cancer incidence and survival were used to update previous figures of limited duration prevalence to the year 2008. The number of patients with cancer diagnosed between 2004 and 2008 who were still alive at the end of 2008 in the adult population is described by world region, country and the human development index. The 5-year global cancer prevalence is estimated to be 28.8 million in 2008. Close to half of the prevalence burden is in areas of very high human development that comprise only one-sixth of the world's population. Breast cancer continues to be the most prevalent cancer in the vast majority of countries globally; cervix cancer is the most prevalent cancer in much of Sub-Saharan Africa and Southern Asia and prostate cancer dominates in North America, Oceania and Northern and Western Europe. Stomach cancer is the most prevalent cancer in Eastern Asia (including China); oral cancer ranks as the most prevalent cancer in Indian men and Kaposi sarcoma has the highest 5-year prevalence among men in 11 countries in Sub-Saharan Africa. The methods used to estimate point prevalence appears to give reasonable results at the global level. The figures highlight the need for long-term care targeted at managing patients with certain very frequently diagnosed cancer forms. To be of greater relevance to cancer planning, the estimation of other time-based measures of global prevalence is warranted. Copyright © 2012 UICC.

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Estimates of the world-wide prevalence of cancer for 25 sites in the adult population.

Paola Pisani, Freddie Bray, D Parkin (2002)

In health services planning, in addition to the basic measures of disease occurrence incidence and mortality, other indexes expressing the demand of care are also required to develop strategies for service provision. One of these is prevalence of the disease, which measures the absolute number, and relative proportion in the population, of individuals affected by the disease and that require some form of medical attention. For most cancer sites, cases surviving 5 years from diagnosis experience thereafter the same survival as the general population, so most of the workload is therefore due to medical acts within these first 5 years. This article reports world-wide estimates of 1-, 2-3- and 4-5-year point prevalence in 1990 in the population aged 15 years or over, and hence describes the number of cancer cases diagnosed between 1986 and 1990 who were still alive at the end of 1990. These estimates of prevalence at 1, 2-3 and 4-5 years are applicable to the evaluation of initial treatment, clinical follow-up and point of cure, respectively, for the majority of cancers. We describe the computational procedure and data sources utilised to obtain these figures and compare them with data published by 2 cancer registries. The highest prevalence of cancer is in North America with 1.5% of the population affected and diagnosed in the previous 5 years (about 0.5% of the population in years 4-5 and 2-3 of follow-up and 0.4% within the first year of diagnosis). This corresponds to over 3.2 million individuals. Western Europe and Australia and New Zealand show very similar percentages with 1.2% and 1.1% of the population affected (about 3.9 and 0.2 million cases respectively). Japan and Eastern Europe form the next batch with 1.0% and 0.7%, followed by Latin America and the Caribbean (overall prevalence of 0.4%), and all remaining regions are around 0.2%. Cancer prevalence in developed countries is very similar in men and women, 1.1% of the sex-specific population, while in developing countries the prevalence is some 25% greater in women than men, reflecting a preponderance of cancer sites with poor survival such as liver, oesophagus and stomach in males. The magnitude of disease incidence is the primary determinant of crude prevalence of cases diagnosed within 1 year so that differences by region mainly reflect variation in risk. In the long-term period however different demographic patterns with long-life expectancy in high-income countries determine a higher prevalence in these areas even for relatively uncommon cancer sites such as the cervix. Copyright 2002 Wiley-Liss, Inc.

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Cancer Statistics in Korea: Incidence, Mortality, Survival, and Prevalence in 2008

Kyu-Won Jung, Sohee Park, Hyun-Joo Kong … (2011)

Purpose This paper overviews the nationwide cancer statistics including incidence, mortality, survival and prevalence, and their trends in Korea based on the year 2008 cancer incidence data. Materials and Methods Incidence data from 1993 to 2008 were obtained from the Korea National Cancer Incidence Database, and the vital status was followed through December 31, 2009. Mortality data from 1983 to 2008 were obtained from the Korea National Statistics Office. Crude rates and age-standardized rates for incidence, mortality, prevalence and relative survival were calculated. Results There were 178,816 cancer cases and 68,912 cancer deaths observed during year 2008 and 724,663 10-year cancer prevalent cases as of January 1, 2009 in Korea. The incidence rate for all cancer combined showed an annual increase of 3.1% from 1999 to 2008. Conclusion With significantly increasing cancer incidence, Korea faces a large cancer burden and efficient cancer control programs are essential.

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Multiple cancer prevalence: a growing challenge in long-term survivorship.

Lynn A. G. Ries, Steve Scoppa, Julia H. Rowland … (2007)

The present study was designed to estimate the number of and describe the pattern of disease among cancer survivors living with a history of multiple malignant tumors in the United States. Incidence and follow-up data from the Surveillance, Epidemiology, and End Results program (1975-2001) were used to calculate the number of survivors with more than one malignant primary at January 1, 2002. U.S. prevalence counts were calculated by multiplying the age, sex, and race-specific prevalence proportions from the Surveillance, Epidemiology, and End Results program by the corresponding U.S. populations. We estimate that 756,467 people in the United States have been affected by cancer more than once between 1975 and 2001, representing almost 8% of the current cancer survivor population. Women whose first primary in that period was breast cancer represent 25% of survivors with multiple cancers, followed by men and women (15%) whose first primary was colorectal cancer and men (13%) whose first primary was prostate cancer. The findings in this report have important implications for public health practice. With individuals diagnosed with cancer living longer and the aging of the U.S. population, the number who will develop multiple malignancies is expected to increase. As a consequence, there is a growing need to promote effective cancer screening along with healthy life-styles among these at-risk populations if we are to ensure optimal physical and psychosocial well-being of these long-term cancer survivors and their families. Efforts to design and evaluate effective, efficient, and equitable approaches to surveillance for second malignancies will be critical in reducing the national burden of cancer.