1.How are most colorectal cancers detected? Most patients with colorectal cancer are diagnosed due to the appearance of symptoms. In this case, only about half of the detected colorectal cancers are early and curable, so it is important to seek timely diagnosis if there are symptoms. However, the best time to monitor colorectal cancer is to screen before symptoms appear, especially in people over 50 years old. 2.When should I start screening? Theoretically, screening should be started for people over the age of 50. If there is a first-degree relative with colorectal cancer, screening should be started earlier. If there are patients with familial polyposis or hereditary non-polyposis colorectal cancer or inflammatory bowel disease, the screening test should be started as early as possible, and the specific screening program should be formulated by the doctor. 3.What should I pay attention to if I am screened? There are some preparations before the screening test that can make the test results more accurate, such as not eating food containing animal blood for a few days before the routine fecal + occult blood test, and how to prepare the intestine before the colonoscopy so that the doctor can observe more clearly to avoid missing lesions. Before the examination, you should consult your doctor to understand the preparations and precautions. 4.What is the most frequent disease during the screening process? Polyps! Especially adenomatous polyps, if they are found during the screening process and removed in parallel, then the incidence of colon cancer will be greatly reduced and play a role in preventing cancer. Follow-up of colonoscopy is crucial. 5.Do I feel pain during colonoscopy? With the development of painless endoscopy, no pain will be felt at all during colonoscopy. If you have a normal colonoscopy, you may feel some abdominal distension and abdominal discomfort. 6.If colon cancer is detected, should a colostomy be performed? Usually not. Less than 5% of patients undergo this procedure, which is only a rerouting procedure of the colon. Surgeons will perform different types of surgery according to the stage and location of the tumor. 7.What are the treatment methods for colorectal cancer? The treatment methods for colorectal cancer include surgery, chemotherapy, radiotherapy and the latest targeted therapy (monoclonal antibody). 8.Is the incidence of colorectal cancer high in women? Yes! Some people wrongly believe that women are not likely to develop colorectal cancer, which is not scientific. The fact is that gender does not differ much in the incidence of colorectal cancer. For this reason, the FDHN organization in the United States has also written a special scientific book on women and colorectal cancer.