The incidence and mortality of colorectal cancer (CRC) in China have been on the rise. The Cancer Statistics Report of China in 2018 showed that the incidence and mortality of CRC ranked third and fifth among all malignant tumors, with 376,000 new cases and 191,000 deaths. Among them, the number in cities was much higher than that in rural areas, and the incidence of colon cancer had increased significantly. Most patients were already in advanced stage at the time of diagnosis.
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