Abstract:

Background and purpose: The Shanghai Municipal Center for Disease Control and Prevention provides annual updates on cancer occurrence and trends in Shanghai. This study aimed to investigate the cervical cancer incidence and mortality in 2016 and their trends from 2002 to 2016 in Shanghai. Methods: Data of new cervical cancer diagnoses and deaths from 2002 to 2016 were obtained from the population-based cancer registry and Vital Statistics System of Shanghai Municipal Center for Disease Control and Prevention. Cervical cancer incidence and mortality stratified by year of diagnosis or death, and age group were analyzed. Number, proportion, crude rate, age-specific rate, age-standardized rate and others were calculated. The number, proportion and rates of common cancers in different groups were also calculated. Trends in number, age-standardized rates and age-specific rates of incidence and death were estimated. Trends in age-standardized rates of incidence and death were estimated by Joinpoint analysis and characterized by the annual percent change (APC). The cases and proportion of selected diagnostic characteristics in different periods of diagnosis years grouped were also calculated. Segi’s 1960 world standard population was used for calculating age-standardized rates of incidence and mortality. Results: The new cervical cancer cases and deaths were 987 and 267 in Shanghai in 2016. The crude rate of incidence was 13.53/105, and the age-standardized rate of incidence was 8.26/105. The crude rate of mortality was 3.66/105, and the age-standardized rate of mortality was 1.87/105. The age-specific number and rate of incidence reached the peak in the age group of 55-59 years and 45-49 years respectively, while those of mortality reached the peak in the age group of 50-54 years and 80-84 years respectively. The standardized incidence rate of cervical cancer increased by an average annual growth of 12.51% from 2002 to 2010 and 3.12% per year from 2010 to 2016 in Shanghai. The standardized mortality rate increased by 4.52% per year from 2002 to 2016. The major histopathological type of cervical cancer was squamous cell carcinoma. The proportions of morphological verification and stage Ⅰwere increasing. Conclusions: In Shanghai, the incidence and mortality of cervical cancer were at a lower level of the world, but they were increasing. The current status and trends reflect Shanghai permanent population changes in risk factors, screening test use, diagnostic practices and treatment advances. Improvement of the surveillance and research on cervical cancer will help to promote more efficient control and prevention strategies and decrease cancer burden.

Key words: Cervical cancer, Incidence, Mortality, Trends, Shanghai