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Background Female breast cancer incidence and mortality data for the duration of 2008, in China, retrieved from the National Central Cancer Registry, was analyzed. Methods In 2008, there were 56 registries that submitted cancer registration data. Based on the criteria of data quality, a total of 41 registries' data met the requirement and were accepted for analysis. The incidence and mortality rates of breast cancer in females were calculated, including age specific rates, age-standardized rates, proportions, and cumulative rates, stratified by areas (urban/rural). Results The number of cases included from 41 registries was 66 138 784, with 32 798 187 of these cases found in women (25 898 251 in urban areas and 6 899 936 in rural areas). There were 15 625 new cases reported and 3414 deaths of women with breast cancer, resulting in a mortality to incidence ratio of 0.22. The morphological verified rate was 91.96%, and 0.43% of cases were identified by death certificate only. The crude cancer incidence rate in all areas was 47.64/100 000, and the Age- Standardized Incidence Rates by Chinese standard population, ( ASIRC) and World standard population ( ASIRW) were 25.26/100 000 and 31.71/100 000, respectively. The cumulative incidence rate (0-74 years old) was 3.44%. Both crude and adjusted incidence rates in urban areas were much higher than those in rural areas. The crude cancer mortality was 10.41/100 000, and the Age- Standardized Mortality Rates by Chinese standard population ( ASMRC) and by World population ( ASMRW) were 4.90/100 000 and 6.48/100 000, respectively. The cumulative mortality rate (0-74 years old) was 0.071%. Age-adjusted mortality rates in urban areas were also higher than in rural areas. Age specific incidence rates peaked in age group 50-54 in all areas (108.27/100 000) and in urban areas (119.68/100 000). It reached the peak in the 55-59 age group for rural women. Age specific mortalities rose with the increase of age for both women in urban and rural areas, with mortality rates of 76.16/100 000 and 23.73/100 000 in age groups of 85 and above, respectively. Conclusions Breast cancer is the most common cancer diagnosed in Chinese women. Preventative measures, such as health education and screening, are needed in the general population, but especially for those in the high-risk group found in urban areas. [ABSTRACT FROM AUTHOR]

Background Breast cancer is the most common cancer among women. Population-based cancer registration data from the National Central Cancer Registry were used to analyze and evaluate the incidence and mortality rates in China in 2013, providing scientific information for cancer prevention and control. Methods Pooled data were stratified by area (urban/rural), gender, and age group. National new cases and deaths were estimated using age-specific rates and the corresponding population in 2013. The Chinese population in 2000 and Segi's world population were used to calculate age-standardized rates. Results The estimated number of new breast cancer cases was about 278 800 in China in 2013. The crude incidence, age-standardized rate of incidence by Chinese standard population, and age-standardized rate of incidence by world standard population were 42.02/100 000, 30.41/100 000, and 28.42/100 000, respectively. The estimated number of breast cancer deaths was about 64 600 in China in 2013. The crude mortality, age-standardized rate of mortality by Chinese standard population, and age-standardized rate of mortality by world standard population were 9.74/100 000, 6.54/100 000, and 6.34/100 000, respectively. Both incidence and mortality were higher in urban than in rural areas. Age-specific breast cancer incidence significantly increased with age, particularly after age 20, and peaked at 50-55 years, while age-specific mortality increased rapidly after 25 years, peaking at 85+ years. Conclusions Breast cancer is the most common cancer in Chinese women, especially women in urban areas. Comprehensive measures are needed to reduce the heavy burden of breast cancer. [ABSTRACT FROM AUTHOR]