Analysis on Colorectal Cancer Incidence in Huangpu District of Shanghai, 1973-2013

Objective To analyze the colorectal cancer incidence trends using cancer registration data in Huangpu District from 1973 to 2013 to provide a basis for colorectal cancer prevention and treatment for health sectors.

Methods Data of diagnosed colorectal cancer patients were retrieved from the National Cancer Registry Database. Annual incidence rates of colorectal cancer stratified by age and gender were calculated; while age standardized rate (ASR) was standardized by 1966 world population age structure. JoinPoint software was used to calculate annual percent change (APC).

Results From 1973 to 2013, the incidence rate and ASR of colorectal cancer patients registered to Huangpu District were 32.68/10⁵ and 20.78/10⁵, respectively (32.63/10⁵ and 19.90/10⁵ for male population, 32.73/10⁵ and 19.52/10⁵ for female population). The colon cancer incidence was 19.18/10⁵, with ASR of 12.06/10⁵, while the rectum cancer incidence was 13.50/10⁵, with ASR of 8.72/10⁵. Both the incidences of colon cancer and rectum cancer in both genders were increased with older age. In the period, the incidence of colorectal cancer was on the rise in general, and the APC of crude incidence rate was 9.90%; after adjusted by age structure, the slope was less steep and the APC was 5.05%.

Conclusion A rising incidence of colorectal cancer is identified in Huangpu District of Shanghai, which requires strengthened actions on prevention and control.