Current status and future challenge of population-based organized colorectal cancer screening: Lesson from the first decade of Taiwanese program

Colorectal cancer (CRC) is the most common cancer in Taiwan, and is the third leading cause of cancer-related death. Screening has been proven the most effective way to reduce CRC mortality, and stool-based screening is currently the most popular method of screening worldwide. In 2004, Taiwanese government launched a nationwide screening program and fecal immunochemical test (FIT) is offered biennially to individuals aged 50 to 75. The results from the program have demonstrated that FIT screening could effectively reduce the mortality from CRC.Nevertheless, there were some problems needed to deal with. First, the occurrence of interval cancers, which are associated with the performance of screening tests or quality of colonoscopy, has affected the program sensitivity. Second, increasing participation in the program has increased the demand for colonoscopy and the burden on public health workers. Third, some individuals are non-compliant with FIT screening, and with the recommendation for colonoscopy after a positive FIT, which may be the result of insufficient awareness toward CRC and screening of the public. Fourth, long-lasting financial support for this program is necessary for its success. All of these problems need to be solved via collaboration between the screening organizer, screening distributor, and professional societies. Keywords: Colonoscopy, Colorectal cancer, Fecal immunochemical test, Mortality, Screenin